WO2006043393A1

WO2006043393A1 - Bag-making and packaging system

Info

Publication number: WO2006043393A1
Application number: PCT/JP2005/017388
Authority: WO
Inventors: Yuji Yokota; Seisaku Iwasa
Original assignee: Ishida Co., Ltd.
Priority date: 2004-10-22
Filing date: 2005-09-21
Publication date: 2006-04-27
Also published as: JP2006117291A

Abstract

A bag-making and packaging system capable of smoothly carrying defective bags such abnormally long or abnormally lightweight bags as to a downstream side even if these defective bags are discharged from a bag-making and packaging machine. The bag-making and packaging system (1) comprises a chute conveyor (21) just below the bag (B) discharge position of a bag-making and packaging part (5) and two conveyor lines (normal product carrying conveyor (23a), abnormal product carrying conveyor (23b)) formed on the downstream side of the chute conveyor (21). In the two conveyor lines, the normal product carrying conveyor (23a) has an angular variation in the carrying direction larger than that of the abnormal product carrying conveyor (23b) as viewed from the direction of discharge of the bags from the bag-making and packaging part (5). The chute conveyor (21) comprises a sorting mechanism (conveyor (21a)) sorting the bags (B) into the normal product carrying conveyor (23a) and the abnormal product carrying conveyor (23b).

Description

Specification

Bag making and packaging system

Technical field

[0001] The present invention relates to a bag-making package provided with a vertical bag-making packaging machine that seals a cylindrical continuous packaging material filled with an article to be packaged to produce the bag, and separates and discharges the bag. About the system. Background art

[0002] Bag making and packaging machines exist as vertical bag making and packaging systems for making bags and filling them by filling the inside of the bag with an object to be packaged such as snacks while manufacturing the bag.

[0003] 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 the vertical packaging mechanism is used to stack the cylindrical packaging materials. The edge of this is heat-sealed (heat-welded) to form a cylindrical packaging material. The tubular packaging material that will eventually become the bag is filled with the tube force package, and the upper end portion of the bag and the lower end portion of the succeeding bag are sealed by the seal joint of the horizontal seal mechanism below the tube. After heat sealing across the two, cut the center of the heat seal part (lateral seal part) with a cutter.

[0004] Then, 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.

Patent Document 1: JP 2002-037206 A (published February 6, 2002)

Disclosure of the invention

Problems to be solved by the invention

[0005] However, the conventional bag making and packaging machine has the following problems.

[0006] That is, in the vertical bag making and packaging system disclosed in the above publication, a bag produced by a vertical bag making and packaging machine, discharged vertically downward, and received by a chute conveyor is transferred to a conveyor. Is transported obliquely upward. For example, when a so-called long bag is discharged that is longer in the transport direction than the normal product produced when the zero point adjustment is performed in the weighing unit of the bag making and packaging machine, use a chute conveyor. After receiving the bag, it becomes difficult to carry the bag upwards while folding the bag, and it may not be possible to carry the bag smoothly. In addition, even in the case of an unusually light bag that is not filled, the frictional force S between the bag and the bag on the conveyor may not be able to be smoothly conveyed.

[0007] An object of the present invention is to make a bag making machine capable of smoothly transporting these abnormal bags downstream even when abnormally long bags or abnormally light bags are discharged. To provide a packaging system.

Means for solving the problem

[0008] A bag making and packaging system according to a first invention includes a vertical bag making and packaging machine, a first transport line, a second transport line, and a transport unit. A vertical bag making and packaging machine makes a bag by sealing a continuous cylindrical packing material filled with an article to be packaged, cuts the bag, and discharges the bag substantially downward in the vertical direction. The first transport line transports the bags produced by the vertical bag making and packaging machine. The second transport line is disposed below the first transport line. The transport unit is disposed below the vertical bag making and packaging machine, and has a sorting mechanism that distributes the bags produced in the vertical bag making and packaging machine to the first and second transport lines. Have. The first conveyance line conveys the bag in the direction in which the vertical bag making and packaging machine force is larger in the conveyance direction angle change of the discharged bag conveyance direction force than the second conveyance line.

Here, for example, a bag discharged vertically downward in a vertical bag making and packaging machine is transported upward in the first transport line from the horizontal direction, whereas in the second transport line, it is transported from the horizontal direction. Transport downward.

In such a configuration, the change in the angle in the transport direction is greater in the bag transport with respect to the first transport line than in the transport with respect to the second transport line. For this reason, in general, in the configuration in which the transport unit is disposed below the vertical bag making and packaging machine as in the present invention, the bag transported to the first transport line is longer than the normal product, is a bag, If an abnormally light bag is filled, it is difficult to smoothly transport such an abnormal bag to the first transport line that transports it upward in the horizontal direction. It was.

[0011] In the bag making and packaging system of the present invention, the conveyance unit disposed below the vertical bag making and packaging machine has a distribution mechanism that distributes the bags to the first conveyance line and the second conveyance line. . [0012] Thus, by setting the second transport line as a line for transporting an abnormal bag, such an abnormal bag can be smoothly transported to the second transport line.

[0013] Note that the first transport line and the second transport line are separated as a conveyor for transporting normal products and abnormal products, and bags having a length in the transport direction larger than a predetermined amount or weight A bag that is lighter than a predetermined amount 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 normal but difficult to transport to the first transport line can be transported smoothly to the downstream side.

[0014] 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. It has a conveyor that switches between the second state of transporting to the second transport line.

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

[0016] Thereby, for example, by setting the conveyor to the first state during normal operation and switching to the second state when an abnormal bag is conveyed, the normal product and the abnormal product are switched to the first transfer line. And the second transfer line.

[0017] 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 conveyance direction by the conveyor.

[0018] Here, the control unit performs control of switching the transport direction by the conveyor.

[0019] 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 carried to the second transport line. Can be controlled to send.

[0020] 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 has a length in the conveying direction that is longer than a normal product in the vertical bag making and packaging machine. When a large bag or a bag in which the filling amount of the packaged material to be put in the bag is smaller than the predetermined amount is produced, the conveyor is switched to the second state.

Here, when the 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. [0022] Thereby, an abnormal bag that is difficult to be transported to the first transport line in which the angle change in the transport direction is larger than that of the second transport line can be smoothly sent toward the second transport line.

[0023] 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 section arranged on the upstream side of the bag making and packaging machine. The control unit switches the conveyor to the second state when the zero point adjustment is performed in the weighing unit.

[0024] Here, the conveyor is set to the second state in conjunction with the timing for adjusting the zero point by the measuring unit arranged on the upstream side of the vertical bag making and packaging machine.

[0025] 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.

[0026] A bag-making packaging system according to a sixth invention is the bag-making packaging system according to any one of the first to fifth inventions, wherein the first transport line is a vertical bag-making packaging machine. The manufactured normal bags are transported, and the second transport line transports the non-normal bags manufactured by the vertical bag making and packaging machine.

Here, the first conveyance line and the second conveyance line branching up and down are used as a line for conveying normal products and a line for conveying abnormal products, respectively.

[0028] Accordingly, normal products with a bag length and weight in the transport direction within a predetermined range go to the first transport line, and other non-normal bags to the second transport line where the change in angle in the transport direction is small. Can be transported.

[0029] A 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 of the invention, wherein the first transport line is obliquely upward from the horizontal direction. The bag is transported, and the second transport line transports the bag downward below the horizontal direction.

[0030] 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.

[0031] With this, 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 to minimize the change in angle in the transport direction as much as possible. By doing so, the bag of an abnormal product can be smoothly conveyed downstream.

Brief Description of Drawings

FIG. 1 is a perspective view showing a configuration of a bag making and packaging machine side of a bag making and packaging system according to an embodiment of the present invention.

FIG. 2 is a front view showing the configuration of the entire bag making and packaging system.

FIG. 3 is a front view of a lateral seal mechanism provided in the bag making and packaging system of FIG.

[4] Plan view of the lateral seal mechanism shown in FIG.

FIG. 5 is an external perspective view of a lateral drive mechanism.

6 is a front view showing a configuration downstream of the bag making and packaging unit of the bag making and packaging system of FIG.

FIG. 7 is a front view showing the positional relationship of the horizontal seal mechanism, the rotating brush mechanism, and the chute conveyor provided in the bag making and packaging system of FIG.

FIG. 8 is a front view showing the state of the chute conveyor when a normal bag is conveyed in FIG.

FIG. 9 is a front view showing a state of the chute conveyor when the abnormal bag is conveyed 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 section

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 (conveying section) 21a Conveyor (distribution mechanism)

21b flat beret

21c Drive roller

21d motor

23 Transport unit

23a Conveyor for normal product (first transfer line)

23b Unconventional product transfer conveyor: 2nd transfer line

30 Sino Retecker-(Post-processing equipment)

31 tubes

32 former

50a First seal jaw moving unit

50b 2nd seal jaw-moving unit

51, 52

91, 92 Drive motor

201a, 201b Rotating brush

202a, 202b drive motor

210 Control unit

B bag (normal product)

B1 bag (unnormal product)

BEST MODE FOR CARRYING OUT THE INVENTION

[0034] A bag making and packaging system according to an embodiment of the present invention will be described below with reference to Figs.

[0035] [Configuration of the entire bag making and packaging system]

The bag making and packaging system 1 of the present 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 its downstream shown in FIG. A bag-making and packaging unit 5 that is a main body for bagging the contents, and a film that becomes a bag is supplied to the bag-making and packaging unit 5 Film supply unit 6, rotating brush mechanism 20, chute conveyor (conveying unit) 21, conveying unit 23, It consists of a seal checker 30 that inspects the bag B produced in the bag packaging unit 5. Further, 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.

The film supply unit 6 serves to supply a sheet-like film to a forming mechanism 13 of the bag making and packaging unit 5 described later, and is provided adjacent to the bag making and packaging unit 5 here. A roll around which a film is wound is set in the film supply section 6 and the roll force film is fed out.

[0037] As shown in Figs. 1 and 2, the bag making and packaging unit 5 includes a forming mechanism 13 for forming a film sent in a sheet shape into a cylindrical shape, and a cylindrical film (hereinafter referred to as a cylindrical shape). A pull-down belt mechanism 14 that transports the film downward), a vertical seal mechanism 15 that heat-seals the overlapping part of the tubular film vertically, and the upper and lower ends of bag B by horizontally sealing the tubular film. It comprises a horizontal seal mechanism 17 that closes and a support frame 12 that supports these mechanisms. A casing 9 is attached around the support frame 12.

The molding mechanism 13 includes a tube 31 and a former 32 as shown in FIG. 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 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 arranged 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 according to the width dimension of the bag B to be manufactured. For this purpose, the molding mechanism 13 is detachable from the support frame 12.

[0039] The pull-down belt mechanism 14 and the vertical seal mechanism 15 are supported by a rail 40 suspended from a top plate 29, and are arranged so as to sandwich the tube 31 from both sides. these The 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 mainly includes a driving roller 41 and a driven roller 42, and a belt 43 having a sucking function. Yes. The vertical sealing mechanism 15 is a mechanism that winds around the tube 31 and heats the overlapping portion of the tubular film while pressing the tube 31 against the tube 31 with a constant applied pressure to seal 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 cylindrical film, and the like.

[0040] <Configuration of lateral seal mechanism>

Next, the lateral seal mechanism 17 will be described.

[0041] 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 horizontal seal mechanism 17 is composed of left and right scene jaw moving units 50a and 50b. These seal jaw moving units 50a and 50b are respectively provided with a pair of seal jaws 51 or 50b of both units 50a and 50b when horizontally sealing the cylindrical film while rotating the two seal jaws 51 and 52 in a D shape. It is a unit for pressing the seal jaws 52 together. Hereinafter, in FIGS. 3 and 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. The tubular film F is conveyed downward along the surface CO separating both seal jaw moving units 50a, 50b in a state where the surface CO is the center in the width direction of the tubular 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 around the axes CI and C2 by the drive motor 91. That is, the seal jaw 51 of the first seal jaw moving unit 50a rotates about the axis C1, and the seal jaw 51 of the second seal jaw moving unit 50b rotates about the axis C2. On the other hand, the seal jaw 52 is rotated around the axes CI and C2 by the drive motor 92. That is, the seal jaw 52 of the first seal movement unit 50a is centered on the axis C1 and the second seal jaw. The seal jaw 52 of one moving unit 50b rotates around the axis C2.

[0043] The rotation of the drive motor 91 causes the gears 91b and 91c to rotate, and the rotation to the swivel shafts 94 and 96 coaxial with the swivel centers CI and C2 of the seal jaw moving units 50a and 50b via the Schmitt coupling 98. It is transmitted. Further, the one end force of the lever 91d is fixed to the pivot shaft 94. Since one end of the lever 91f is fixed to the pivot shaft 96, the levers 91d and 91f rotate around the pivot centers CI and C2.

On the other hand, the rotation of the drive motor 92 causes the gears 92b and 92c to rotate, and the swivel shafts 9 and 97 coaxial with the swivel centers CI and C2 of the seal jaw moving units 50a and 50b through the Schmitt coupling 99. The rotation is transmitted to. Then, one end force of the lever 92d is fixed to the turning shaft 95. Since one end of the lever 92f is fixed to the turning shaft 97, the levers 92d and 92f rotate around the turning centers CI and C2.

[0045] 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.

[0046] The seal jaw 51 of the second seal jaw moving unit 50b is supported at one end by the tip of the lever 9 If 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.

[0047] 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.

[0048] 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.

[0049] 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 therein. This heater heats the sealing surfaces of the sealing jaws 51, 52, and a part of the tubular film F sandwiched between the left and right sealing jaws 51, 52 is heat-sealed!

[0050] The Schmitt couplings 98 and 99 also have three disk forces connected by a link. The shaft coupling is configured to transmit the rotation of the input shaft to the output shaft. These Schmitt force couplings 98 and 99 output rotation of the input shaft even when the output shaft moves in a plane with respect to the input shaft fixed in a plane and the axial distance between the two changes. It can be communicated to the axis.

[0051] Further, the pivot shafts 94, 95, 96, 97 are pivotally supported by the horizontal moving plates 62a, 61a, 62b, 61b, respectively. These horizontal moving plates 62a, 61a, 62b, 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 moving plates 61a and 61b as an example. As shown in FIG. 5, the lateral drive mechanism 55 has 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 6 lb so as to be slidable in the horizontal direction. It has a guide and guide rail.

[0052] The drive mechanism 75 includes a ball screw 80a that is rotated by a servo motor 80 (see FIG. 3), first and second nut members 81 and 82 that are screwed into the ball screw 80a, and a horizontal direction of the ball screw 80a. The first and second connecting rods 83, 84 provided to be orthogonal to each other, the pair of third connecting rods 85 provided along the moving direction, and the first connecting rods 85 provided in parallel with the third connecting rod 85. It has 4 connecting rods 86!

[0053] 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. Yes. 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 the joint 88, and the tip of the fourth connecting rod 86 is fixed to the side end surface of the horizontal moving plate 61a.

[0054] In the ball screw 80a, the portion where the first nut member 81 is screwed and the portion where the second nut member 82 is screwed are mutually reverse screws.

[0055] 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.

[0056] <Operation up to the side sealing process of the bag making and packaging unit>

Next, the operation of the bag making and packaging system 1 will be described. 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. Then, the film F is wound around the tube 31 so that both end portions are overlapped on the peripheral surface, and the overlapped portion is vertically sealed by the vertical seal mechanism 15.

[0059] The cylindrical film F that has been sealed vertically and has a cylindrical shape passes through the tube 31 and descends to the lateral seal 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 in which the content is present are heat-sealed sideways while the contents are present in the tubular film F. Is done.

[0060] <Operation after Side 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 horizontal seal mechanism 17 to the chute conveyor 21 via the rotating brush mechanism 20. Then, it is transported to the downstream side in the transport direction by the chute conveyor 21, and sent to a post-process device (post-processing device) such as the seal checker 30 through the transport unit 23.

[0061] <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 under the bag discharge position in the horizontal seal mechanism 17 and between the horizontal seal mechanism 17 and the chute conveyor 21. A rotating brush mechanism 20 is provided.

As shown in FIG. 7, the rotating brush mechanism 20 includes a pair of rotating brushes 201a and 201b that rotate about respective rotating shafts, and a driving motor that rotationally drives the rotating brushes 201a and 201b. With 202a, 202b!

[0063] 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 rotary brushes 201a and 201b are guided between the rotary brushes 201a and 201b so as to sandwich the bag B fed from the both sides with the seal partial force at the upper end suspended in the horizontal seal mechanism 17. To the predetermined position of the chute conveyor 21. Drop it. Further, the rotating brushes 201a and 201b have the same size and rotate so that the tip end portions of the brushes draw a circular orbit around the rotation axis. Therefore, even if the bag B is stuck to one side of the side jaw mechanism 51, 52 of the side paper mechanism 17! / Even if it does not fall into the center part between the rotary brushes 201a, 20 lb, the rotary brush 201a, If the force in the vicinity of the top of 201b is also within the inner range, bag B can be guided between rotating brushes 201a and 20 lb so as to be wound between them. Note that the pair of rotating brushes 201a and 201b has a speed equivalent to the manufacturing speed of the bag B in the bag making and packaging unit 5 or the bag B so that the bag B does not stay in the rotating brush mechanism 20. It rotates at a slightly faster speed. Further, the pair of rotating brushes 201a and 201b are arranged such 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. It has an adjustment mechanism 204 for this purpose.

It should be noted that the rotating brushes 201a and 201b actually have a brush portion extending in the radial direction around the rotation axis, and are shown as simple circles for convenience in the drawings. 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 to rotate independently of each other. The drive motors 202a and 202b 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. In addition, the control unit 210 can adjust the conveyance direction of the bag B by controlling the drive motors 202a and 202b independently to make a difference in the respective rotation speeds of the rotary brushes 201a and 201b.

[0066] <Configuration of chute conveyor>

As shown in FIG. 2, the chute conveyor 21 is disposed below the bag B discharge position and the rotary brush mechanism 20 in the horizontal seal mechanism 17, and the conveyance surface is disposed at an angle of about 30 degrees. The bag that falls is received and transported downstream. As shown in FIG. 7, the chute conveyor 21 includes an openable / closable conveyor (distribution mechanism) 21a (see the two-dot chain arrow in the figure), an endless flat belt 21b for conveying an object, and a flat belt. A driving roller 21c that supports 21b from the inside, a motor 21d that generates a rotational driving force, and the like are provided. And Shi The Uute conveyor 21 conveys the object placed on the flat belt 21b in a desired direction when the rotation driving force of the motor 21d is transmitted to the driving roller 21c via the timing belt and the flat belt 21b rotates. To do.

[0067] 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 conveyor 21a In contrast, the bag B is conveyed (see FIG. 8), and in the open state (second state), the bag B is conveyed to the abnormal product conveying 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 the so-called long bag B1, which is longer in the transport direction than the normal bag B, is discharged from the lateral seal mechanism 17 of the bag making and packaging unit 5, The part 210 opens the conveyor 21a.

[0068] 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, a bag like a long bag is used. When an unusually long bag B1 is produced in the bag making and packaging part 5, the change in the transport direction is large (changes the vertical downward direction to an obliquely upward direction from the horizontal direction), so the contents are filled with the packaging. In some cases, it is difficult to transport the bag B1 that is bent and difficult to bend in the direction of the normal product conveyor 23a.

[0069] In the bag making and packaging system 1 of the present embodiment, even when the chute conveyor 21 is provided immediately below the bag making and packaging unit 5, the conveyor 21a included in the chute conveyor 21 is in the open state. By switching to, an abnormally long bag such as the long bag bag B1 can be easily conveyed toward the desired non-normal product conveying conveyor 23b.

[0070] <Conveyor unit configuration>

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

[0071] As shown in FIG. 6, the normal product conveyor 23a is a conveyance line extending obliquely upward from the horizontal direction, and is normal to the post-processing device such as the seal checker 30. Transport bag B. Therefore, after the bag B transported to the normal product transport conveyor 23a is discharged downward in the vertical direction, the transport direction is changed by more than 90 degrees.

[0072] As shown in FIG. 6, the abnormal product transport conveyor 23b is a transport line extending substantially in the horizontal direction, and transports an abnormal bag B1 such as a long bag shown in FIG. 9 to a predetermined discharge location. To do. In other words, the non-normal 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 direction of conveyance with respect to the normal product conveyor 23b has a smaller change angle in the conveyance direction than that with respect to the normal product conveyor 23a.

[0073] <Control during zero 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 accurately measure the combination weighing machine 2 at all times. When performing such zero point adjustment, all objects to be weighed in the weighing container are forcibly discharged. For this reason, in this case as well, a long bag (unusual bag B1) as shown in FIG. 9 is produced, and the apparatus waits without a lateral seal at the upper end. 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 long bag of the abnormal product is removed. Bag B1 can be made.

[0074] Therefore, when the control unit 210 detects that the zero point adjustment is performed in order to smoothly convey the bag B1 that is long in the conveying direction and is filled to the predetermined discharge position, the controller 210 controls the conveyor 21a. To switch to the open state. As a result, the change angle in the conveyance direction of the bag B1 is made as small as possible, and the bag B1 can be smoothly conveyed toward the abnormal product conveyance conveyor 23b.

[0075] 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 weigher 2, a long bag is produced and the conveyor 21a is opened. It's just a matter of control!

Note that the control for opening the conveyor 21a is not limited to the production of an abnormal bag such as the above-described long bag or lightweight bag. For example, even when sampling a plurality of bags B, inspection can be performed for a plurality of bags at the discharge position by opening the conveyor 21a and transporting it toward the abnormal product transport conveyor 23b. [0077] [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. Conveyor 23a and abnormal product conveyor 23b) are formed. In these two transport lines, the normal direction transport conveyor 23a has a larger change in the transport direction angle than the non-normal product transport conveyor 23b in view of the force in the bag discharge direction from the bag making and packaging unit 5. 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.

[0078] Usually, for example, when an abnormal bag B1 such as the long bag shown in Fig. 9 is produced in the bag making and packaging unit 5 (lateral seal mechanism 17), the bag B1 that is long in such a conveyance direction is used. Since it is difficult to bend, it may be difficult to transport in the direction of the normal product conveyor 23a where the angle change in the transport direction is large. Abnormally light bags other than Ron bags may also be difficult to transport while climbing toward the normal product conveyor 23a because the frictional force with the conveyor surface is reduced.

[0079] In order to improve transportability for such an abnormal bag, in the bag making packaging system 1 of the present embodiment, an abnormal product transport conveyor 23b is provided below the normal product transport conveyor 23a, and the long For an abnormal bag B1, such as a bag, the conveyor 21a is opened and conveyed to the lower abnormal product conveyor 23b.

[0080] As a result, the non-normal product transport conveyor 23b has a smaller change in the angle in the transport direction of the bag B discharged from the bag making and packaging unit 5 than the transport to the normal product transport conveyor 23a. Even this abnormal bag B1 can be transported smoothly without causing stagnation.

[0081] (2)

In the bag making and packaging system 1 of the present embodiment, the conveyor 21a is used as a sorting mechanism that sorts normal and abnormal bags.

[0082] Thus, various bags that are distributed under a predetermined condition can be easily distributed to the upper and lower transfer lines (normal product transfer conveyor 23a and abnormal product transfer conveyor 23b). be able to. Therefore, the normal bag B can be smoothly conveyed to the upper normal product conveyor 23a, and the abnormal bag B1 can be smoothly conveyed to the lower abnormal product conveyor 23b.

[0083] (3)

In the bag making and packaging system 1 of the present embodiment, the control unit 210 controls the opening and closing of the conveyor 21a.

[0084] Thereby, for example, when the zero point adjustment in the combination weighing machine 2 is performed or the long bag produced when the total discharge is performed is detected to be discharged, the control unit 210 detects the conveyor. 21a can be switched to the open state.

[0085] (4)

In the bag making and packaging system 1 according to the present embodiment, the control unit 210 includes 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.

[0086] This makes it possible to control the control unit 210 even for an abnormal bag in which smooth conveyance becomes difficult when the angle change in the conveyance direction increases, such as a long bag that is long in the conveyance direction or an abnormally light bag. Since the control is performed so that the conveyor 21a is opened, the bags can be smoothly transported to the downstream side without being retained.

[0087] (5)

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

[0088] Thus, even when a long bag is produced in order to receive all the objects to be weighed by the combination weighing machine 2 and receive it in the bag, this is smoothly conveyed to the abnormal product conveyor. Can be transported toward 23b.

[0089] (6)

In the bag making and packaging system 1 of the present embodiment, a two-stage upper and lower transfer line is formed. A normal product transfer conveyor 23a that transfers normal bags B is transferred to the upper level, and an abnormal bag B1 is transferred to the lower level. An abnormal product conveyor 23b is installed.

[0090] With this, for the abnormal bag B1, which is likely to be transported, the change angle in the transport direction By transporting to the lower-stage abnormal product conveyor 23b on the lower side, the non-normal product can be smoothly transported to the specified discharge position provided on the lower-stage without causing stagnation. Can do.

[0091] (7)

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

[0092] With this, for the abnormal bag B1 in which the conveyance stay is likely to occur, the bag discharged from the bag making and packaging unit 5 downward in the lead direction can be conveyed in the horizontal direction. Therefore, the non-normal product transfer conveyor 23b has an angle change of about 90 degrees in the transfer direction, so that the non-normal product transfer conveyor 23b has an angle change in the transfer direction larger than 90 degrees. The transportability of normal bags B1 can be improved.

[0093] [Other Embodiments]

Although one embodiment of the present invention 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.

[0094] (A)

In the above embodiment, the normal product conveyor 23a extends obliquely upward from the horizontal, and the non-normal product conveyor 23b extends in the substantially horizontal direction. However, the present invention is not limited to this.

[0095] For example, if the change angle of the transfer direction of the abnormal product transfer conveyor 23b is smaller than that of the normal product transfer conveyor 23a, both the force of the normal product transfer conveyor 23a and the abnormal product transfer conveyor 23b are oblique from the horizontal. It may be a conveyor extending upward. Even in this case, it is possible to prevent the bag from staying by transporting the abnormal bag B1, etc., which is difficult to transport to the normal product conveyor 23a, to the normal product transport conveyor 23b, which is easy to transport. The effect of can be obtained.

However, as in the above-described embodiment, it is preferable that the abnormal bag B1 discharged vertically downward is preferably transported downstream with the change angle in the transport direction being as small as possible. As shown in Fig. It is desirable to be a bear.

[0097] (B)

In the above embodiment, 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.

[0098] For example, when the length of the bag in the transport direction is not less than a predetermined amount in the sorting method of normal products and non-normal products, the bag is transported to the lower conveyor, and for bags shorter than the predetermined amount, You may convey to an upper stage conveyor. Also, if it is a normal product but the packaged item is light and the weight of the entire bag is smaller than the predetermined amount, the bag is transported to the lower conveyor, and a bag having a predetermined weight or more is transported to the upper conveyor. May be. 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.

[0099] (C)

In the above-described 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 of the conditions for opening the conveyor 21a. However, the present invention is not limited to this.

[0100] For example, in the case where an abnormal bag is produced for some reason other than at zero point adjustment or full discharge, the same effect as above can be obtained by controlling the conveyor 21a to be opened in the same manner. Can be obtained.

[0101] (D)

In the above-described embodiment, the conveyor 21a used as the distribution mechanism is rotated around one end so that the bags are 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 is described. However, the present invention is not limited to this.

[0102] For example, as the distribution mechanism, in addition to rotating the conveyor 21a around one end, the conveyor 21a slides and moves toward the flat belt 21b to form the second state. Even the configuration. [0103] (E)

In the above embodiment, the example in which the conveyor 21a is opened and closed by the air cylinder has been described. However, the present invention is not limited to this.

[0104] 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.

[0105] (F)

In the above-described embodiment, an example has been described in which the bag is long in the conveyance direction, the bag (see FIG. 9) or abnormally light, and the bag is conveyed to the lower-stage abnormal product conveyance conveyor 23b. However, the present invention is not limited to this.

[0106] For example, in addition to this, when various types of bags that are likely to stay in the transport when the change in the angle in the transport direction is large are produced, the bags are transported to the lower-level abnormal product transport conveyor 23b. By doing so, it is possible to improve the transportability of an abnormal bag as described above.

Industrial applicability

[0107] The bag making and packaging system of the present invention exhibits the effect that even if an abnormal bag is discharged from the bag making and packaging machine, it can be smoothly conveyed to the downstream side. It can be widely applied to bag making and packaging systems equipped with a sorting mechanism that sorts bags directly under the bag packaging machine.

Claims

The scope of the claims

[1] a vertical bag making and packaging machine that seals a continuous cylindrical packing material filled with an article to be packaged, detaches the bag, and discharges the bag substantially vertically downward;

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;

It is arranged below the vertical bag making and packaging machine, and has a sorting mechanism for distributing the bags produced in the vertical bag making and packaging machine to the first transport line and the second transport line. A transport section;

With

The first conveying line conveys the bag in a direction in which an angle change in the conveying direction from the conveying direction of the discharged bag is larger than that of the second conveying line. .

[2] The distribution mechanism includes a conveyor that switches between a first state in which the bag is conveyed to the first conveyance line and a second state in which the bag is conveyed to the second conveyance line. The bag making and packaging system according to claim 1.

[3] The apparatus further includes a control unit that controls switching of the conveyance direction by the conveyor.

The bag making and packaging system according to claim 1 or 2.

[4] 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 a filling amount of an object to be packed in the bag is smaller than a predetermined amount. The conveyor is switched to the second state when

The bag making and packaging system according to claim 3.

[5] It further comprises a weighing unit disposed on the upstream side of the bag making and packaging machine,

The control unit switches the conveyor to the second state when the zero adjustment is performed in the weighing unit.

The bag making and packaging system according to claim 3 or 4.

[6] The first transport line transports normal bags produced in the vertical bag making and packaging machine,

The second transfer line is used to store abnormally-made bags produced on the vertical bag making and packaging machine. Carry,

The bag making and packaging system according to any one of claims 1 to 5.

The first transport line transports the bag obliquely upward from the horizontal direction, and the second transport line transports the bag downward in the horizontal direction or lower. The bag making and packaging system described.