JP2006117291A - Bag-making and packaging system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag-making and packaging system capable of smoothly carrying a defective bag to the downstream even if an abnormally long bag or an abnormally light bag is discharged from a bag-making and packaging machine. <P>SOLUTION: The bag-making and packaging system 1 is equipped with a chute conveyer 21 immediately below a discharge position of a bag B in a bag-making and packaging section 5. Two conveyance lines (a normal article conveyance conveyer 23a and an abnormal article conveyance conveyer 23b) are formed on the downstream of the chute conveyer 21. The normal article conveyance conveyer 23a of the two conveyance lines has a larger change in angle of the conveyance direction than that of the abnormal article conveyance conveyer 23b when viewed from the bag discharge direction from the section 5. The chute conveyer 21 is equipped with a sorting mechanism (conveyer 21a) for sorting bags B into the normal article conveyance conveyer 23a and the abnormal article conveyance conveyer 23b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a bag making and packaging system including a vertical bag making and packaging machine that seals a cylindrical continuous packaging material filled with an article to be packaged, performs bag making, and separates and discharges the bag.

  BACKGROUND ART A bag making and packaging machine exists as a vertical bag making and packaging system in which a bag is filled with a packaged article such as a snack while the bag is being manufactured.

  For example, in a bag making and packaging machine called a vertical pillow packaging machine, a packaging material, which is a sheet-like film, is formed into a cylindrical shape by a former and a tube, and a vertical sealing mechanism is used to heat a vertical edge on which the cylindrical packaging material is stacked. Seal (heat welding) to make a cylindrical packaging material. Then, the tubular packaging material that finally becomes a bag is filled with an article to be packaged from the tube, and spans between the upper end portion of the bag and the lower end portion of the succeeding bag by the sealing jaw of the horizontal seal mechanism below the tube. After heat sealing, the center of the heat seal portion (lateral seal portion) is cut with a cutter.

The cut bag is received by a chute conveyor disposed immediately below the lateral seal mechanism, and then conveyed to a post-processing device such as a seal checker disposed on the downstream side.
JP 2002-037206 A (published February 6, 2002)

  However, the conventional bag making and packaging machine has the following problems.

  That is, in the vertical bag making and packaging system disclosed in the above publication, the bag produced by the vertical bag making and packaging machine, discharged downward in the vertical direction, and received by the chute conveyor is conveyed obliquely upward by the conveyor. ing. For example, when a so-called long bag is discharged that is longer than the normal product produced when the zero point adjustment is performed in the weighing unit of the bag making and packaging machine, it is received by the chute conveyor. Thereafter, it becomes difficult to carry the bag upward from the horizontal direction while bending the bag, and there is a possibility that smooth conveyance cannot be performed. Further, even in the case of an abnormally light bag that is not filled with content, the frictional force between the bag and the bag on the conveyor may be small, and the bag may not be smoothly conveyed.

  An object of the present invention is to provide a bag making and packaging system capable of smoothly transporting these abnormal bags to the downstream side even when abnormally long bags or abnormally light bags are discharged from the bag making and packaging machine. There is to do.

  The bag making and packaging system according to the first invention includes a vertical bag making and packaging machine, a first transport line, a second transport line, and a transport unit. The vertical bag making and packaging machine performs bag making by sealing a cylindrical continuous packaging material filled with an article to be packaged, cuts the bag, and discharges the bag substantially downward in the vertical direction. A 1st conveyance line conveys the bag produced in the vertical type bag making packaging machine. The second transport line is disposed below the first transport line. The conveyance unit is disposed below the vertical bag making and packaging machine, and has a distribution mechanism that distributes the bags produced in the vertical bag making and packaging machine to the first conveyance line and the second conveyance line. And a 1st conveyance line conveys a bag in the direction whose angle change of the conveyance direction from the conveyance direction of the bag discharged | emitted from a vertical bag making packaging machine is larger than a 2nd conveyance line.

  Here, for example, a bag discharged downward in the vertical direction in a vertical bag making and packaging machine is transported upward in the first transport line from the horizontal direction, while transported downward in the second transport line from the horizontal direction. To do.

  In such a configuration, the change in the angle in the conveyance direction is greater in the bag conveyance with respect to the first conveyance line than in the conveyance with respect to the second conveyance line. For this reason, normally, in the configuration in which the transport unit is arranged below the vertical bag making and packaging machine as in the present invention, the bag transported to the first transport line is a bag longer than a normal product, or the contents are In the case of an abnormally light bag that is not filled, it is difficult to smoothly transport such an abnormal bag to the first transport line that transports the bag upward in the horizontal direction.

  In the bag making and packaging system of the present invention, the transport unit arranged below the vertical bag making and packaging machine has a sorting mechanism that distributes the bags to the first transport line and the second transport line.

  Thereby, the above-mentioned abnormal bag can be smoothly conveyed to the 2nd conveyance line by making the 2nd conveyance line into the line which conveys the bag of abnormal goods.

  In addition to separating the first transport line and the second transport line as conveyors for transporting normal products and non-normal products, bags whose length in the transport direction is larger than a predetermined amount, and whose weight is greater than a predetermined amount. Light bags may be transported to the second transport line, and other bags may be transported to the first transport line. Even in this case, a long bag or the like that is a normal product but difficult to transport to the first transport line can be smoothly transported downstream.

  The bag making and packaging system according to the second invention is the bag making and packaging system according to the first invention, wherein the sorting mechanism includes a first state in which the bag is conveyed to the first conveying line, and a bag in the second state. A conveyor that switches between the second state of transport to the transport line is provided.

  Here, a conveyor that is arranged below the vertical bag making and packaging machine and can switch between the first state and the second state is used as the sorting mechanism.

  Thus, for example, the normal state and the non-normal product are switched between the first transfer line and the second transfer by setting the conveyor to the first state during normal operation and switching to the second state when an abnormal bag has been transferred. It can be assigned to each line.

  A bag making and packaging system according to a third aspect of the present invention is the bag making and packaging system according to the first or second aspect of the present invention, and further includes a control unit that controls switching of the transport direction by the conveyor.

  Here, the control unit performs control of switching the transport direction by the conveyor.

  Thereby, for example, when the control unit detects that an abnormal bag is produced in the vertical bag making and packaging machine, the conveyor is switched to the second state and conveyed to the second conveyance line. Can be controlled.

  The bag making and packaging system according to the fourth invention is the bag making and packaging system according to the third invention, wherein the control unit is a bag having a length in the transport direction larger than that of a normal product in the vertical bag making and packaging machine, Alternatively, the conveyor is switched to the second state when a bag in which the filling amount of the article to be packaged is smaller than a predetermined amount is produced.

  Here, when production of an abnormal bag is detected in the vertical bag making and packaging machine, control is performed so that the conveyor is switched to the second state.

  Thereby, an abnormal bag that is difficult to be transported to the first transport line whose angle change in the transport direction is larger than that of the second transport line can be smoothly sent to the second transport line.

  A bag making and packaging system according to a fifth aspect of the present invention is the bag making and packaging system according to the third or fourth aspect of the present invention, further comprising a measuring unit arranged on the upstream side of the bag making and packaging machine, and a control unit Switches the conveyor to the second state when the zero point adjustment is performed in the weighing unit.

  Here, the conveyor is set to the second state at the timing when the zero point adjustment is performed by the measuring unit arranged on the upstream side of the vertical bag making and packaging machine.

  Normally, when the zero point adjustment of the measuring unit is performed, a bag longer than a normal product is produced and discharged. For this reason, when it is detected that the zero point adjustment is performed in the weighing unit, the conveyor can be set to the second state, and the long bag can be conveyed to the second conveyance line. Therefore, a long bag which is an abnormal product can be transported to the second transport line more smoothly than when transported to the first transport line where the angle change in the transport direction is large.

  A bag making and packaging system according to a sixth aspect of the present invention is the bag making and packaging system according to any one of the first to fifth aspects of the invention, wherein the first transport line is produced in a vertical bag making and packaging machine. A normal bag is conveyed, and the second conveyance line conveys an abnormal bag produced in a vertical bag making and packaging machine.

  Here, the first conveyance line and the second conveyance line that branch up and down are used as a line that conveys a normal product and a line that conveys an abnormal product, respectively.

  As a result, normal products whose bag length and weight in the transport direction are within a predetermined range are transported to the first transport line, and other non-normal bags are transported to the second transport line with a small change in the transport direction angle. be able to.

  The bag making and packaging system according to a seventh aspect of the present invention is the bag making and packaging system according to any one of the first to sixth aspects, wherein the first transport line transports the bag obliquely upward from the horizontal direction. And a 2nd conveyance line conveys a bag below in the horizontal direction.

  Here, the first transport line is a transport line that transports upward from the horizontal direction, and the second transport line is a transport line that transports downward below the horizontal direction.

  As a result, bags that are longer than normal products or unusually light bags are transported to the second transport line that transports downwards below the horizontal direction, and the change in the angle in the transport direction is made as small as possible. A normal bag can be conveyed downstream.

  According to the bag making and packaging system of the present invention, an abnormal bag such as a long bag can be smoothly transported to the second transport line.

  It will be as follows if the bag making packaging system which concerns on one Embodiment of this invention is demonstrated using FIGS.

[Overall configuration of bag making and packaging system]
The bag making and packaging system 1 of this embodiment includes a vertical bag making and packaging unit (vertical bag making and packaging machine) 5 for packing contents such as potato chips shown in FIG. 1, and a downstream side thereof shown in FIG. A main body part for carrying out bagging of the contents, and a film for supplying a film that becomes a bag to the bag making and packaging part 5 It is comprised from the supply part 6, the rotating brush mechanism 20, the chute conveyor (conveyance part) 21, the conveyance unit 23, and the seal checker 30 which inspects the bag B produced in the bag making packaging part 5. In addition, operation switches 7 are arranged on the front surface of the bag making and packaging unit 5, and a liquid crystal display 8 showing an operation state is arranged at a position where an operator who operates the operation switches 7 can visually recognize.

<Configuration of film supply unit and bag making and packaging unit>
The film supply part 6 plays the role which supplies a sheet-like film to the shaping | molding mechanism 13 of the bag making packaging part 5 mentioned later, and is provided adjacent to the bag making packaging part 5 here. A roll around which the film is wound is set in the film supply unit 6, and the film is fed out from the roll.

  As shown in FIG. 1 and FIG. 2, the bag making and packaging unit 5 includes a forming mechanism 13 that forms a film sent in a sheet shape into a tubular shape, and a tubular film (hereinafter referred to as a tubular film). ) Downward, a vertical sealing mechanism 15 that vertically heat-seals the overlapping portion of the tubular film, and a lateral that closes the upper and lower ends of the bag B by horizontally sealing the tubular film. The seal mechanism 17 is composed of a support frame 12 that supports each of these mechanisms. A casing 9 is attached around the support frame 12.

  As shown in FIG. 2, the forming mechanism 13 has a tube 31 and a former 32. The tube 31 is a cylindrical member, and the upper and lower ends are open. The tube 31 is arranged in an opening in the vicinity of the center of the top plate 29 in plan view, and is integrated with the former 32 via a bracket (not shown). The contents weighed from the combination weighing machine 2 are put into the opening at the upper end of the tube 31. The former 32 is disposed so as to surround the tube 31. The shape of the former 32 is such that the sheet-like film F sent from the film supply unit 6 is formed into a cylindrical shape when passing between the former 32 and the tube 31. The former 32 is also fixed to the support frame 12 via a support member (not shown). Further, the tube 31 and the former 32 of the forming mechanism 13 can be replaced in accordance with the width dimension of the bag B to be manufactured. Therefore, the forming mechanism 13 is detachable from the support frame 12.

  The pull-down belt mechanism 14 and the vertical seal mechanism 15 are supported by rails 40 suspended from the top plate 29, and are arranged so as to sandwich the tube 31 from both sides. These mechanisms 14 and 15 are moved and aligned along the rail 40 when the tube 31 is attached. The pull-down belt mechanism 14 is a mechanism that sucks the cylindrical film F wound around the tube 31 and conveys it downward. The pull-down belt mechanism 14 is mainly composed of a driving roller 41 and a driven roller 42 and a belt 43 having a sucking function. . The vertical sealing mechanism 15 is a mechanism that heats an overlapping portion of the tubular film wound around the tube 31 while pressing it against the tube 31 with a constant applied pressure, and seals it vertically. The vertical sealing mechanism 15 includes a heater, a heater belt that is heated by the heater and contacts an overlapping portion of the tubular film, and the like.

<Configuration of horizontal seal mechanism>
Next, the lateral seal mechanism 17 will be described.

  The horizontal seal mechanism 17 is disposed below the forming mechanism 13, the pull-down belt mechanism 14, and the vertical seal mechanism 15, and is supported by the support frame 12. As shown in FIGS. 3 and 4, the lateral seal mechanism 17 is composed of left and right seal jaw moving units 50a and 50b. These seal jaw moving units 50a and 50b respectively have a pair of seal jaws 51 or 50b of both units 50a and 50b when horizontally sealing the cylindrical film while turning the two seal jaws 51 and 52 in a D shape. This is a unit for pressing the seal jaws 52 together. Hereinafter, in FIG. 3 and FIG. 4, the one located on the left side of the tubular film F is referred to as a first seal jaw moving unit 50a, and the one located on the right side is referred to as a second seal jaw moving unit 50b. In addition, the cylindrical film F is conveyed below along the surface C0 which divides both the sealing jaw moving units 50a and 50b so that the surface C0 is the center in the width direction of the cylindrical film F.

  The seal jaw moving units 50a and 50b both have seal jaws 51 and 52, but the drive motor for the seal jaw 51 and the drive motor for the seal jaw 52 are different. The seal jaw 51 is rotated about the axes C1 and C2 by the drive motor 91. That is, the sealing jaw 51 of the first sealing jaw moving unit 50a rotates around the axis C1, and the sealing jaw 51 of the second sealing jaw moving unit 50b rotates around the axis C2. On the other hand, the seal jaw 52 is rotated about the axes C1 and C2 by the drive motor 92. That is, the seal jaw 52 of the first seal jaw moving unit 50a rotates about the axis C1, and the seal jaw 52 of the second seal jaw moving unit 50b rotates about the axis C2.

  The rotation of the drive motor 91 causes the gears 91b and 91c to rotate, and the rotation is transmitted to the pivot shafts 94 and 96 coaxial with the pivot centers C1 and C2 of the seal jaw moving units 50a and 50b via the Schmitt coupling 98. Since one end of the lever 91d is fixed to the turning shaft 94 and one end of the lever 91f is fixed to the turning shaft 96, the levers 91d and 91f rotate around the turning centers C1 and C2.

  On the other hand, the rotation of the drive motor 92 causes the gears 92b and 92c to rotate, and the rotation is transmitted to the turning shafts 95 and 97 coaxial with the turning centers C1 and C2 of the seal jaw moving units 50a and 50b via the Schmitt coupling 99. Since one end of the lever 92d is fixed to the turning shaft 95 and one end of the lever 92f is fixed to the turning shaft 97, the levers 92d and 92f rotate around the turning centers C1 and C2.

  The seal jaw 51 of the first seal jaw moving unit 50a is supported at one end by the tip of the lever 91d and at the other end by the tip of the lever 91e. The lever 91e is a member that rotates about the turning center C1, and is supported by the turning shaft 95 so as to be relatively rotatable.

  The seal jaw 51 of the second seal jaw moving unit 50b is supported at one end by the tip of the lever 91f and at the other end by the tip of the lever 91g. The lever 91g is a member that rotates about the turning center C2, and is supported by the turning shaft 97 so as to be relatively rotatable.

  The seal jaw 52 of the first seal jaw moving unit 50a is supported at one end by the tip of the lever 92d and at the other end by the tip of the lever 92e. The lever 92e is a member that rotates about the turning center C1 and is supported by the turning shaft 94 so as to be relatively rotatable.

  The seal jaw 52 of the second seal jaw moving unit 50b is supported at one end by the tip of the lever 92f and at the other end by the tip of the lever 92g. The lever 92g is a member that rotates about the turning center C2, and is supported by the turning shaft 96 so as to be relatively rotatable.

  Each of the sealing jaws 51 and 52 is a member formed so as to extend longer than the dimension of the tubular film F in the vertical direction of FIG. 4 and has a heater inside. The sealing surfaces of the sealing jaws 51 and 52 are heated by this heater, and a part of the cylindrical film F sandwiched between the left and right sealing jaws 51 and 52 is heat-sealed.

  The Schmitt couplings 98 and 99 are composed of three discs connected by links, and are shaft couplings that transmit the rotation of the input shaft to the output shaft. These Schmitt couplings 98 and 99 can rotate the input shaft even when the output shaft moves in a plane with respect to the input shaft fixed in a plane to change the axial distance between the two. Can be communicated to.

  The pivot shafts 94, 95, 96, and 97 are pivotally supported by the horizontal moving plates 62a, 61a, 62b, and 61b, respectively. These horizontal movement plates 62a, 61a, 62b, and 61b are horizontally moved by a lateral drive mechanism 55 shown in FIG. The horizontal movement plates 61a and 62a move in the same manner, and the horizontal movement plates 61b and 62b move in the same manner. Here, the horizontal drive mechanism 55 will be described by taking the horizontal movement plates 61a and 61b as an example. As shown in FIG. 5, the lateral drive mechanism 55 includes a drive mechanism 75 for moving the horizontal moving plates 61a and 61b close to or away from each other, and supports the horizontal moving plates 61a and 61b so as to be slidable in the horizontal direction. It has a guide part and a guide rail.

  The drive mechanism 75 is orthogonal to the ball screw 80a rotated by a servo motor 80 (see FIG. 3), first and second nut members 81 and 82 screwed into the ball screw 80a, and the ball screw 80a in the horizontal direction. First and second connecting rods 83, 84 provided in the direction of movement, a pair of third connecting rods 85 provided along the moving direction, and a fourth connecting rod 86 provided in parallel with the third connecting rod 85. And have.

  The first connecting rod 83 is connected to a pair of third connecting rods 85 via joints 87, and the tips of the pair of third connecting rods 85 are fixed to the side end surfaces of the horizontal moving plate 61b. Note that the pair of third connecting rods 85 slidably penetrates the horizontal movement plate 61a. The second connecting rod 84 is connected to the fourth connecting rod 86 via a joint 88, and the tip of the fourth connecting rod 86 is fixed to the side end surface of the horizontal moving plate 61a.

  In the ball screw 80a, a portion where the first nut member 81 is screwed and a portion where the second nut member 82 is screwed are mutually reverse screws.

  By such a driving mechanism 75, the ball screw 80a rotates, whereby the horizontal moving plates 61a and 61b can be brought close to or separated from each other.

<Operation up to the side sealing process of the bag making and packaging unit>
Next, operation | movement of the bag making packaging system 1 is demonstrated.

  First, the operation until the lateral sealing process is performed in the bag making and packaging system 1 will be described with reference to FIG.

  The sheet-like film F sent from the film supply unit 6 to the forming mechanism 13 is wound around the tube 31 from the former 32 and formed into a cylindrical shape, and is conveyed downward by the pull-down belt mechanism 14 as it is. The film F is in a state where both ends are overlapped on the peripheral surface in the state of being wound around the tube 31, and the overlapped portion is vertically sealed by the vertical seal mechanism 15.

  The cylindrical film F that has been sealed vertically and has a cylindrical shape passes through the tube 31 and descends to the horizontal sealing mechanism 17. At this time, simultaneously with the movement of the tubular film F, a lump of contents falls from the combination weighing machine 2 through the tube 31. In the horizontal sealing mechanism 17, the upper end of the bag B and the lower end portion of the bag B on the upper side of the bag B where the contents are present are heat-sealed in a state where the contents are present in the tubular film F. Is done.

<Operation after lateral seal processing of bag making and packaging system>
As shown in FIGS. 2 and 6, the bag B continuously manufactured as described above falls from the lateral seal mechanism 17 to the chute conveyor 21 via the rotating brush mechanism 20. And it conveys to the downstream in the conveyance direction by the chute conveyor 21, and is sent to post-process apparatuses (post-processing apparatus), such as the seal checker 30, via the conveyance unit 23.

<Configuration of rotating brush mechanism>
As shown in FIGS. 6 and 7, the bag making and packaging system 1 of the present embodiment is directly below the bag discharge position in the horizontal seal mechanism 17, and rotates between the horizontal seal mechanism 17 and the chute conveyor 21. A brush mechanism 20 is provided.

  As shown in FIG. 7, the rotary brush mechanism 20 includes a pair of rotary brushes 201 a and 201 b that rotate about the respective rotation axes, and drive motors 202 a and 202 b that rotate the rotary brushes 201 a and 201 b. I have.

  As shown in FIG. 7, the pair of rotating brushes 201a and 201b are arranged so that the respective rotating shafts are horizontal. Then, the pair of rotating brushes 201a and 201b guides between the rotating brushes 201a and 201b so as to sandwich the bag B sent from both sides in a state of being suspended from the seal portion at the upper end in the horizontal sealing mechanism 17, The chute conveyor 21 is dropped to a predetermined position. Further, the rotating brushes 201a and 201b have the same size and rotate so that the tip portions of the brushes draw a circular orbit around the rotation axis. For this reason, even when the bag B sticks to one of the sealing jaws 51 and 52 of the horizontal sealing mechanism 17 and does not fall to the central portion between the rotating brushes 201a and 201b, the bag B is inward from the vicinity of the top of the rotating brushes 201a and 201b. If it is within the range, the bag B can be guided between the rotating brushes 201a and 201b so as to be wound between them. Note that the pair of rotating brushes 201a and 201b has a speed equal to or slightly higher than the manufacturing speed of the bag B in the bag making and packaging unit 5 so that the bag B does not stay in the rotating brush mechanism 20. Rotate with. Further, the pair of rotating brushes 201a and 201b are arranged so that the gap between them is slightly narrower than the thickness of the bag B, and the distance between the rotating brushes 201a and 201b is adjusted according to the thickness of the bag B. The adjusting mechanism 204 is provided.

  The rotating brushes 201a and 201b actually have a brush portion extending in the radial direction with the rotation axis as the center, but are shown as simple circles in each figure for convenience. For this reason, the bag B conveyed so as to be sandwiched between the two rotating brushes 201a and 201b is sent to the chute conveyor 21 while receiving an appropriate pressure from both sides due to the elasticity of the brush portion.

  The drive motors 202a and 202b drive the rotary brushes 201a and 201b independently of each other. The drive motors 202 a and 202 b are connected to the control unit 210, and the rotation speed is controlled by the control unit 210 according to the operation speed in the bag making and packaging unit 5. Moreover, the control part 210 can adjust the conveyance direction of the bag B by making a difference in each rotational speed of the rotating brush 201a, 201b by controlling drive motor 202a, 202b independently.

<Configuration of chute conveyor>
As shown in FIG. 2, the chute conveyor 21 is disposed below the bag B discharge position in the horizontal seal mechanism 17 and below the rotary brush mechanism 20, and drops in a state where the angle of the conveying surface is set at about 30 degrees. The incoming bag is received and conveyed downstream. As shown in FIG. 7, the chute conveyor 21 includes an openable and closable conveyor (distribution mechanism) 21a (see a two-dot chain line arrow in the figure), an endless flat belt 21b that conveys an object, and a flat belt 21b. Are provided with a driving roller 21c for supporting the motor from the inside, a motor 21d for generating a rotational driving force, and the like. The chute conveyor 21 transmits the rotational driving force of the motor 21d to the driving roller 21c via the timing belt and rotates the flat belt 21b, so that the object placed on the flat belt 21b is moved in a desired direction. Transport to.

  The conveyor 21a is controlled in its open / closed state (first state, second state) by the control unit 210 shown in FIGS. 7 to 9, and in the closed state (first state), the bag B with respect to the normal product conveyor 23a. (See FIG. 8), and in the open state (second state), the bag B is transported to the abnormal product transport conveyor 23b (see FIG. 9). Specifically, during normal operation, the controller 210 keeps the conveyor 21a closed as shown in FIG. 8, and transports the normal bags B to the normal product transport conveyor 23a. On the other hand, as shown in FIG. 9, when it is detected that a so-called long bag B1 having a length in the transport direction larger than that of the normal bag B is discharged from the lateral seal mechanism 17 of the bag making and packaging unit 5, the control is performed. The unit 210 opens the conveyor 21a.

  Here, in the bag making and packaging system 1 provided with a transport conveyor such as the chute conveyor 21 immediately below the bag making and packaging unit 5 (lateral seal mechanism 17) as in the present embodiment, an abnormally long bag such as a long bag is used. When B1 is produced in the bag making and packaging unit 5, since the change angle in the transport direction is large (vertically downward is changed obliquely upward from the horizontal direction), the bag is particularly hard to bend because the contents are filled with the packaged items. It may be difficult to transport B1 in the direction of the normal product conveyor 23a.

  In the bag making and packaging system 1 of the present embodiment, even when the chute conveyor 21 is provided directly below the bag making and packaging unit 5, the conveyor 21a included in the chute conveyor 21 is switched to the open state. Thus, an abnormally long bag such as the long bag B1 can be easily transported toward the desired abnormal product transport conveyor 23b.

<Conveyor unit configuration>
As shown in FIG. 6, the conveyor unit 23 includes a normal product transport conveyor (first transport line) 23 a that transports normal bags B discharged to the chute conveyor 21 to a post-processing device such as a seal checker 30, And an abnormal product transfer conveyor (second transfer line) 23b for transferring an abnormal product bag B1 such as a long bag to a desired discharge location.

  As shown in FIG. 6, the normal product transport conveyor 23 a is a transport line extending obliquely upward from the horizontal direction, and transports the normal bag B to the post-processing device such as the seal checker 30. Therefore, after the bag B conveyed with respect to the normal article conveyance conveyor 23a has been discharged downward in the vertical direction, the conveyance direction is changed more than 90 degrees.

  As shown in FIG. 6, the abnormal product transfer conveyor 23 b is a transfer line extending substantially in the horizontal direction, and transfers an abnormal bag B <b> 1 such as a long bag shown in FIG. 9 to a predetermined discharge location. That is, the abnormal product transport conveyor 23b is arranged so that the bag B can be transported in an obtuse direction compared to the normal product transport conveyor 23a. For this reason, the conveyance direction change angle is smaller in the conveyance to the abnormal product conveyance conveyor 23b than in the conveyance to the normal product conveyance conveyor 23a.

<Control during zero point adjustment>
In the bag making and packaging system 1 of the present embodiment, the zero point adjustment of the measuring instrument is performed in order to always accurately measure the combination weighing machine 2. When performing such zero point adjustment, all objects to be weighed in the weighing container are forcibly discharged. Therefore, in this case as well, a long bag (unusual bag B1) as shown in FIG. 9 is produced, and the apparatus waits in a state where the upper end portion is not laterally sealed. As a result, the objects to be weighed forcibly discharged from the plurality of weighing containers of the combination weighing machine 2 are received, and after all the discharges are completed, the upper end is laterally sealed, and the bag B1 of the non-normal product long bag Can be produced.

  Therefore, when the controller 210 detects that the zero point adjustment is to be performed in order to smoothly convey the bag B1 that is long in the conveying direction and is filled with the contents to the predetermined discharge position, the controller 210 controls and opens the conveyor 21a. Switch to state. Thereby, the change angle in the conveyance direction of bag B1 can be made as small as possible, and can be smoothly conveyed toward the abnormal article conveyance conveyor 23b.

  Also in the case of performing so-called all discharge processing, in which all the objects to be weighed are discharged from the weighing container of the combination weighing machine 2, a long bag is produced in the same manner, and control is performed so that the conveyor 21a is opened. Needless to say.

  In addition, the control which makes the conveyor 21a an open state is not limited at the time of preparation of abnormal bags, such as a long bag mentioned above and a lightweight bag. For example, even when sampling a plurality of bags B, it is possible to inspect a plurality of bags at the discharge position by opening the conveyor 21a toward the abnormal product transporting conveyor 23b.

[Features of this bag-making packaging system]
(1)
In the bag making and packaging system 1 of the present embodiment, a chute conveyor 21 is provided immediately below the bag B discharge position in the bag making and packaging unit 5, and two conveyance lines (normal product conveyance) are provided downstream of the chute conveyor 21. A conveyor 23a and an abnormal product conveyor 23b) are formed. In these two transport lines, when viewed from the bag discharging direction from the bag making and packaging unit 5, the normal product transport conveyor 23a has a larger change in the transport direction angle than the abnormal product transport conveyor 23b. The chute conveyor 21 is provided with a distribution mechanism (conveyor 21a) that distributes the bags B to the normal product conveyor 23a and the abnormal product conveyor 23b.

  Normally, for example, when an abnormal bag B1 such as a long bag shown in FIG. 9 is produced in the bag making and packaging unit 5 (lateral seal mechanism 17), such a long bag B1 in the transport direction is difficult to bend. For this reason, it may be difficult to transport the product in the direction of the normal product transport conveyor 23a where the change in the angle in the transport direction is large. An abnormally light bag other than the Lon bag may also be difficult to transport while climbing toward the normal product transport conveyor 23a because the frictional force with the conveyor surface is reduced.

  In order to improve the transportability with respect to such an abnormal bag, in the bag making and packaging system 1 of the present embodiment, the abnormal product transport conveyor 23b is provided at the lower stage of the normal product transport conveyor 23a, and the non-normal bag such as a long bag is provided. About the normal bag B1, the conveyor 21a is made into an open state, and it is made to convey toward the lower stage abnormal product conveyance conveyor 23b.

  Thereby, since the angle change of the conveyance direction of the bag B discharged | emitted from the bag making packaging part 5 is smaller than the non-normal goods conveyance conveyor 23b conveying to the normal article conveyance conveyor 23a, it is abnormal, such as a long bag Even the bag B1 can be smoothly transported without causing stagnation.

(2)
In the bag making and packaging system 1 of the present embodiment, a conveyor 21a is used as a distribution mechanism that distributes normal and abnormal bags.

  As a result, various bags distributed under a predetermined condition can be easily distributed to the two upper and lower transport lines (normal product transport conveyor 23a and abnormal product transport conveyor 23b). Therefore, the normal product bag B can be smoothly conveyed to the upper normal product conveyance conveyor 23a, and the abnormal product bag B1 can be smoothly conveyed to the lower abnormal product conveyance conveyor 23b.

(3)
In the bag making and packaging system 1 of the present embodiment, the control unit 210 performs opening / closing control of the conveyor 21a.

  Thereby, for example, when the zero point adjustment in the combination weighing machine 2 is performed, or when the long bag produced when performing full discharge is detected, the control unit 210 opens the conveyor 21a. Can be switched to.

(4)
In the bag making and packaging system 1 according to the present embodiment, the control unit 210 includes the bag making and packaging unit 5 such as a bag B1 that is abnormally long in the transport direction, such as a long bag shown in FIG. When it is detected that the conveyor 21a is discharged, the conveyor 21a is switched to the open state.

  As a result, even if the bag is not normal, such as a long bag that is long in the transport direction or an abnormally light bag, and the angle change in the transport direction is large, smooth control is difficult. Since the control is performed so as to be in the open state, the bag can be smoothly conveyed to the downstream side without causing the bag to stay.

(5)
In the bag making and packaging system 1 of the present embodiment, when the zero point adjustment is performed in the combination weighing machine 2, the conveyor 21a is opened.

  As a result, even when all the objects to be weighed are discharged from the weighing container of the combination weighing machine 2 and a long bag is produced in order to receive it in the bag, this is smoothly directed toward the abnormal product transport conveyor 23b. Can be transported.

(6)
In the bag making and packaging system 1 of the present embodiment, the upper and lower two-stage transport lines are formed, the normal product transport conveyor 23a that transports normal bags B in the upper stage, and the non-normal bag B1 that transports abnormal bags B1 in the lower stage. A normal product conveyor 23b is provided.

  Thereby, about the abnormal bag B1 in which the conveyance stay is likely to occur, by carrying it toward the lower-stage non-normal product conveyance conveyor 23b on the side where the change angle in the conveyance direction is small, the conveyance stay does not occur. An abnormal product can be smoothly conveyed to a predetermined discharge position provided on the lower side.

(7)
In the bag making and packaging system 1 of the present embodiment, the normal product transport conveyor 23a as the first transport line is a transport line extending obliquely upward from the horizontal, and the abnormal product transport conveyor 23b as the second transport line is horizontal. It is a conveyance line extending in the direction.

  Thereby, about the abnormal bag B1 which is easy to produce conveyance retention, the bag discharged | emitted from the bag making packaging part 5 to the perpendicular direction downward can be conveyed in a horizontal direction. Therefore, the non-normal product transport conveyor 23b has an angle change of about 90 degrees in the transport direction, so that it is not normal than transporting to the normal product transport conveyor 23a in which the angle change in the transport direction is greater than 90 degrees. The transportability of the large bag B1 can be improved.

[Other Embodiments]
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of invention.

(A)
In the above-described embodiment, an example in which the normal product conveyor 23a extends obliquely upward from the horizontal and the abnormal product conveyor 23b extends substantially in the horizontal direction has been described. However, the present invention is not limited to this.

  For example, if the change angle of the conveyance direction of the abnormal product conveyor 23b is smaller than that of the normal product conveyor 23a, both the normal product conveyor 23a and the abnormal product conveyor 23b extend obliquely upward from the horizontal. It may be a conveyor. In this case as well, the bag can be prevented from staying by transporting the abnormal bag B1 or the like that is difficult to transport to the normal product transport conveyor 23a toward the abnormal product transport conveyor 23b that is easy to transport. The effect of can be obtained.

  However, since the abnormal bag B1 discharged vertically downward as in the above embodiment is preferably transported downstream with the change angle in the transport direction as small as possible, as in the above embodiment, A conveyor that extends in the horizontal direction or obliquely below the horizontal is desirable.

(B)
In the embodiment described above, the normal product and the non-normal product are distributed on the conveyor 21a and are conveyed to the upper and lower conveyors 23a and 23b. However, the present invention is not limited to this.

  For example, instead of sorting between normal and non-normal products, if the length of the bag in the transport direction is greater than or equal to a predetermined amount, it is transported to the lower transport conveyor, and bags shorter than the predetermined amount are transported to the upper conveyor May be. In addition, if the packaged item is light and the weight of the entire bag is smaller than a predetermined amount, it is transported to the lower conveyor, and a bag having a weight more than the predetermined amount is transported to the upper conveyor. Good. In this way, for bags that are long in the transport direction or lightweight bags that may be difficult to transport to the upper conveyor with a large angle change in the transport direction, the lower conveyor that has a small change angle in the transport direction and is easy to transport. By conveying to the direction, stagnation of the bag can be prevented.

(C)
In the said embodiment, the case where the zero point adjustment in the combination weighing machine 2 is performed, the case where all the packages are discharged, and the like have been described as examples when the conveyor 21a is in the open state. However, the present invention is not limited to this.

  For example, the same effect as described above can be obtained by controlling the conveyor 21a to be opened in the same manner in cases where an abnormal bag is produced for some reason other than at zero point adjustment or full discharge. Can do.

(D)
In the above-described embodiment, the conveyor 21a used as the distribution mechanism is rotated around one end so that the bag is conveyed toward the normal product conveyor 23a and the abnormal product conveyor 23b. An example of switching between the second state in which the bag is conveyed has been described. However, the present invention is not limited to this.

  For example, in addition to rotating the conveyor 21a around one end, the distribution mechanism is configured to form the second state when the conveyor 21a slides and moves toward the flat belt 21b. May be.

(E)
In the said embodiment, the example which opens and closes the conveyor 21a with an air cylinder was given and demonstrated. However, the present invention is not limited to this.

  For example, in addition to the air cylinder, it may be opened and closed by a hydraulic cylinder, an electric actuator, a rotational drive of the drive roller 21c, or the like.

(F)
In the said embodiment, the example which conveys the bag (refer FIG. 9) long in an conveyance direction, or an abnormally light bag with respect to the lower-stage abnormal article conveyance conveyor 23b was given and demonstrated. However, the present invention is not limited to this.

  For example, in addition to this, when various bags that are likely to cause conveyance retention when the change in the angle in the conveyance direction is large are produced, by conveying this to the lower-stage abnormal product conveyance conveyor 23b, Similarly to the above, it is possible to improve the transportability of an abnormal bag.

  The bag making and packaging system of the present invention has the effect of enabling smooth downstream transport even when an abnormal bag is discharged from the bag making and packaging machine. The present invention is widely applicable to bag making and packaging systems having a sorting mechanism for sorting bags.

The perspective view which shows the structure by the side of the bag making packaging machine of the bag making packaging system which concerns on one Embodiment of this invention. The front view which shows the structure of the whole bag making packaging system. The front view of the horizontal seal | sticker mechanism with which the bag making packaging system of FIG. 1 is provided. FIG. 4 is a plan view of the lateral seal mechanism shown in FIG. 3. The external appearance perspective view of a horizontal direction drive mechanism. The front view which shows the structure of the downstream from the bag making packaging part of the bag making packaging system of FIG. The front view which shows the positional relationship of the horizontal seal | sticker mechanism with which the bag making packaging system of FIG. 2 is equipped, a rotating brush mechanism, and a chute conveyor. The front view which shows the state of the chute conveyor at the time of conveying a normal bag in FIG. The front view which shows the state of the chute conveyor at the time of conveying the abnormal bag in FIG.

Explanation of symbols

1 Bag Making and Packaging System 2 Combination Weighing Machine 5 Bag Making and Packaging Department (Vertical Bag Making and Packaging Machine)
6 Film supply unit 7 Operation switches 12 Support frame 13 Molding mechanism 14 Pull-down belt mechanism 15 Vertical seal mechanism 17 Horizontal seal mechanism 20 Rotating brush mechanism 21 Chute conveyor (conveyance unit)
21a Conveyor (sorting mechanism)
21b Flat belt 21c Driving roller 21d Motor 23 Conveying unit 23a Normal product conveying conveyor (first conveying line)
23b Abnormal product conveyor (second conveyor line)
30 Seal Checker (Post-processing device)
31 Tube 32 Former 50a First seal jaw moving unit 50b Second seal jaw moving unit 51, 52 Seal jaw 91, 92 Drive motor 201a, 201b Rotating brush 202a, 202b Drive motor 210 Controller B Bag (normal product)
B1 bag (unusual product)

Claims (7)

A vertical bag making and packaging machine that seals a cylindrical continuous packaging material filled with an article to be packaged, separates the bag, and discharges the bag downward in a substantially vertical direction;
A first transport line for transporting bags produced in the vertical bag making and packaging machine;
A second transport line disposed below the first transport line;
The distribution mechanism is arranged below the vertical bag making and packaging machine, and distributes the bags produced in the vertical bag making and packaging machine to the first and second conveyance lines. A transport section;
With
The first conveyance line conveys the bag in a direction in which an angle change in the conveyance direction from the conveyance direction of the bag discharged from the vertical bag making and packaging machine is larger than the second conveyance line.
Bag making and packaging system. The sorting mechanism includes a conveyor that switches between a first state in which the bags are transported to the first transport line and a second state in which the bags are transported to the second transport line.
The bag making and packaging system according to claim 1. A control unit for controlling switching of the conveyance direction by the conveyor;
The bag making and packaging system according to claim 1 or 2. When the control unit produces a bag having a larger length in the transport direction than a normal product in the vertical bag making and packaging machine, or a bag in which the filling amount of an object to be put in the bag is less than a predetermined amount And switching the conveyor to the second state,
The bag making packaging system according to claim 3. Further comprising a weighing unit disposed upstream of the bag making and packaging machine;
The control unit switches the conveyor to the second state when performing zero point adjustment in the weighing unit.
The bag making packaging system according to claim 3 or 4. The first transport line transports normal bags produced in the vertical bag making and packaging machine,
The second conveying line conveys a bag of an abnormal product produced in the vertical bag making and packaging machine,
The bag making packaging system of any one of Claim 1 to 5. The first transport line transports the bag obliquely upward from the horizontal direction,
The second conveying line conveys the bag downward in the horizontal direction or below.
The bag making and packaging system according to any one of claims 1 to 6.

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