JP2019167147A - Filling and packaging machine - Google Patents

Abstract

To provide a filling and packaging machine which can achieve smooth transport of a packaging material.SOLUTION: According to this filling and packaging machine 1, while plural bag parts 202, which are arranged in a lengthwise direction of a packaging material 200, are respectively so formed on the circumferential transport path 211 as to be opened at an upper part thereof, each bag part is filled with a filler 203, and heating by a heating part 60 and a clamp pressurizing by a pressurizing part 66 are performed in order for an upper edge part of the packaging material 200 on an extension transport path 212, thereby sealing the bag part 202. In this filling and packaging machine, the heating part 60 is located over a prescribed transport area between an end point 214 of a circumferential transport path 211 and the pressurizing part 66 on the extension transport path 212, a guide member 151, which supports the packaging material 200 from a lower side, is provided below the heating part 60, and the guide member 151 is configured from a single member which continuously extends while bending from a position on an upstream side with respect to an upstream end of the heating part 60 to a position on a downstream side with respect to a downstream end of the pressurizing part 66 in a transport direction 206 of the packaging material 200.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a filling and packaging machine for continuously forming a plurality of bag portions on a belt-shaped packaging material and filling each bag portion with a filler.

  As disclosed in Patent Document 1, for example, a rotary filling and packaging machine for packaging a powdery or granular filler is known. This type of filling and packaging machine is generally provided with a circumferential conveyance path that extends horizontally in a substantially arc shape in plan view and an extended conveyance path that continues to the end point of the circumferential conveyance path as a conveyance path for the packaging material.

  A belt-shaped packaging material is continuously supplied to the circumferential conveyance path in a state where the wrap is folded in two so as to face downward. On the circumferential conveyance path, the packaging material is conveyed in the circumferential direction while being held by a plurality of vertical seal portions arranged at intervals in the circumferential direction. Each vertical seal portion includes a pair of seal bars that sandwich the packaging material, and heat seals the packaging material portion that is sandwiched between the pair of seal bars. Thereby, the vertical seal | sticker extended in an up-down direction from the upper end to a lower end is formed in a packaging material.

  In the packaging material, a plurality of vertical seals are formed at predetermined intervals in the transport direction. Thereby, the bag part opened upwards is formed in the packaging material between the adjacent vertical seals. In the circumferential conveyance path, each bag portion is filled with a filler supplied from above.

  The packaging material portion that has completed the formation of the bag portion and the filling of the filler in the circumferential conveyance path is sent out from the circumferential conveyance path to the extended conveyance path. The extended conveyance path is provided with a top seal portion that forms a top seal extending in the horizontal direction at the upper edge of the packaging material.

  The top seal part includes a heating part that heats the upper edge part of the packaging material, and a pressure part that pressurizes and heat-seals the upper edge part heated by the heating part. The pressurizing unit includes a pair of seal rollers, and sandwiches the packaging material between the seal rollers. On the extended conveyance path, the packaging material sequentially passes through the heating unit and the pressurizing unit to seal the upper edge portion, thereby sealing the bag portion.

  As described above, in the circumferential conveyance path, the packaging material is sandwiched between the seal bars of the vertical seal portion, and in the extended conveyance path, the packaging material is sandwiched between the seal rollers of the pressurizing portion of the top seal portion. Moreover, in the conveyance area | region from the end point of a circumferential conveyance path to the pressurization part of an extension conveyance path, a packaging material is supported from the lower side by a guide member.

JP 2006-021795 A

  By the way, the upper edge part of the packaging material is spread when passing through the heating part and the pressure part of the top seal part in the extended conveyance path. Moreover, in the bag part of the packaging material filled with fillers, such as a powder agent, a bottom part bulges to the side. Therefore, in the extended conveyance path, the packaging material is bent and deformed so that the upper edge portion is slightly longer than the lower edge portion, and is curved downward slightly toward the tip. Therefore, the support height by the guide member is configured to gradually decrease toward the downstream side in the transport direction.

  Since the degree of bending of the packaging material in the extended conveyance path varies depending on the size of the packaging material, the amount of the filler, and the like, it is necessary to adjust the support height by the guide member according to the degree of bending of the packaging material. . Therefore, in the conventional extended conveyance path, as in Patent Document 1, a plurality of guide members whose heights can be individually adjusted are arranged in the conveyance direction.

  However, if the support mechanism that supports the packaging material from the lower side in the extended conveyance path is configured to be divided into a plurality of guide members, a joint or gap is generated between the guide members, so that the guide by the support mechanism is discontinuous. become. Therefore, the lower edge portion of the packaging material is easily caught by the joint portion between the guide members, particularly at the lower edge portion of the vertical seal. Therefore, the conventional rotary filling and packaging machine has room for improvement in order to facilitate transportation.

  An object of this invention is to provide the filling packaging machine which can aim at the smooth conveyance of a packaging material.

The filling and packaging machine according to one aspect of the present invention is:
While the belt-like packaging material supplied continuously is conveyed along a circumferential conveyance path extending horizontally in a substantially arc shape in plan view and an extended conveyance path connected to the end point of the circumferential conveyance path, Filling each of the bag portions with a filler while forming a plurality of bag portions arranged in the length direction of the packaging material in the conveyance path so that the upper sides thereof are opened, and in the extended conveyance path, the packaging material A filling and packaging machine that seals the bag portion by sequentially performing heating by the heating portion and clamping by the pressure portion on the upper edge portion,
The heating unit is disposed over a predetermined conveyance region between the end point of the circumferential conveyance path and the pressure unit in the extended conveyance path,
A guide member that supports the packaging material from below is provided below the heating unit,
The guide member is curved downward so as to continue from a position upstream of the upstream end of the heating unit to a position downstream of the downstream end of the pressurizing unit in the conveyance direction of the packaging material. It is a single member that extends.

  According to the filling and packaging machine according to the present invention, the packaging material portion that passes through the heating section and the pressurizing section on the extended conveyance path is supported from the lower side by a single guide member without a joint. It is possible to suppress the lower edge of the guide member from being caught by the guide member. Therefore, the movement of the packaging material in the extended conveyance path is facilitated, thereby effectively suppressing the positional deviation, loosening, catching, bending, and the like of the upper edge of the packaging material in the heating unit and the pressurizing unit. . Therefore, the sealing accuracy of the upper edge of the packaging material can be improved. Moreover, when the cutting part corresponding to the vertical seal | sticker of a packaging material is provided in the downstream of a pressurization part, the precision of the alignment of the vertical seal | sticker with respect to a cutting | disconnection part can also be improved.

The front view of the filling packaging machine which concerns on one Embodiment of this invention. The top view of the filling packaging machine shown in FIG. The perspective view which shows a part of filling and packaging machine shown in FIG. The front view which shows a part of continuous bag body manufactured with the filling packaging machine shown in FIG. The top view of the 1st guide mechanism provided in the extended conveyance path. FIG. 6 is a view taken in the direction of the arrow A in FIG. The B line arrow directional view of FIG. 5 which looked at the 1st guide mechanism and the 3rd guide mechanism from the packaging material conveyance direction upstream. The CC sectional view taken on the line of FIG. 6 which shows a part of 1st guide mechanism. The top view which shows a 2nd guide mechanism and its periphery part. The top view which shows a 3rd guide mechanism. The side view which shows a 3rd guide mechanism. The DD sectional view taken on the line of FIG. 11 which saw the 3rd guide mechanism from the packaging material conveyance direction. The top view similar to FIG. 5 which shows the 1st guide mechanism in the continuous operation state of a filling packaging machine. Sectional drawing similar to FIG. 8 which shows the modification of a space | interval adjustment mechanism. The top view similar to FIG. 9 which shows the modification of a ventilation means.

  Hereinafter, a filling and packaging machine (hereinafter also simply referred to as “packaging machine”) according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[1. Packaging machine]
As shown in FIGS. 1, 3, and 4, the packaging machine 1 uses a packaging material 200 made of a belt-like film or sheet. A continuous bag body 205 (see FIG. 4) is formed on the packaging material 200 by the packaging machine 1.

  In order to form the continuous bag body 205, the packaging material 200 is folded in two so that a downwardly convex crease is formed at the center in the short direction while being conveyed in the horizontal direction. The folded packaging material 200 is bonded or sealed at predetermined intervals in the longitudinal direction.

  As a result, as shown in FIG. 4, a plurality of vertical seals 201 extending in the vertical direction are formed on the packaging material 200, and a bag portion 202 opened upward is formed between adjacent vertical seals 201. In the longitudinal direction of the packaging material 200, the bag portions 202 are formed continuously, and each bag portion 202 is filled with a filler 203 supplied from above.

  Subsequently, a top seal 204 is formed at the upper edge of the packaging material 200 by adhesion or sealing, whereby the upper end opening of the bag portion 202 filled with the filling material 203 is closed. Thereby, the continuous bag body 205 which has the several sealed bag part 202 continuously is formed.

  The continuous bag body 205 is, for example, cut along the vertical seal 201 between adjacent bag parts 202 and separated into individual bag parts 202 or a bag made of a plurality of continuous bag parts 202, or adjacent. It is processed into a bag body having perforations 207 along the vertical seal 201 between the bag portions 202 to be processed.

  As shown in FIGS. 1-3, the packaging machine 1 has the main body frame 10 as a support body which supports the below-mentioned various components. The main body frame 10 is fixed to a horizontal surface such as a floor of a building. The packaging machine 1 includes a packaging material supply unit 12 that supplies the packaging material 200, and a center that extends in the longitudinal direction of the packaging material 200 while guiding the packaging material 200 supplied from the packaging material supply unit 12 in a substantially horizontal direction. It further has a folded-up portion 14 that folds the packaging material 200 into a substantially V shape with the line as a fulcrum.

  As shown in FIGS. 1 to 4, the packaging machine 1 heat-bonds a pair of packaging material pieces in the packaging material 200 folded up by the folding unit 14 at a predetermined interval in the longitudinal direction. The seal 201 and the bag part 202 are formed continuously, and the filler filling part 15 for filling each bag part 202 with the filler 203, the filler supply part 16 for feeding the filler 203 to the filler filling part 15, and the filler The top seal portion 17 that forms the top seal 204 by thermally bonding the upper end of each bag portion 202 filled with 203, and the cutting portion that forms the perforation 207 in the vertical seal 201 between the adjacent bag portions 202 18.

[2. Packaging material supply department]
As shown in FIG. 1, the packaging material supply unit 12 includes a support shaft (shaft) 22 that supports a roll 21 around which a packaging material 200 made of a strip-shaped film or sheet having a predetermined lateral width is wound, and a support shaft 22. And a plurality of rollers 23 for guiding the packaging material 200 fed out from the roll 21 attached to the folding part 14.

[3. Folding part]
As shown in FIG. 3, the folding unit 14 includes a folding guide 24 that comes into contact with the upper surface of the packaging material 200 fed from the last roller 23 of the packaging material supply unit 12 in a substantially horizontal direction. The folding guide 24 has a substantially V-shaped cross-sectional shape. The upward opening angle of the folding guide 24 (the upward opening angle of the V-shaped cross section) is gradually reduced as the distance from the last roller 23 increases along the packaging material conveyance direction 206.

[4. Filler filling section]
As shown in FIGS. 1 and 2, the filler filling portion 15 is supported by the main body frame 10 so as to be rotatable about a fixed table 30 fixed to the main body frame 10 and a shaft 26 extending in the vertical direction. The rotary table 31 is provided. The fixed table 30 is made of, for example, a circular plate material, and is disposed substantially perpendicular to the vertical direction. The turntable 31 is made of, for example, an annular plate material and is disposed substantially perpendicular to the vertical direction. The rotary table 31 is arranged concentrically with the fixed table 30. The rotary table 31 is rotationally driven around the shaft 26 by a drive source such as a motor (not shown).

  As shown in FIGS. 1 and 3, a plurality of (n: n is an integer) vertical seal portions 32 are provided on the rotary table 31 at a predetermined interval (360 degrees / n) on the circumference around the shaft 26. Are arranged with an angular interval). Each vertical seal portion 32 includes a fixed seal bar 33 fixed to the rotary table 31 and a movable seal bar 34 disposed on the radially outer side of the fixed seal bar 33.

  The fixed seal bar 33 is arranged on the rotary table 31 so as to extend in the vertical direction. The outer surface in the radial direction of the fixed seal bar 33 is a heating surface disposed on the seal reference circle 35 (see FIG. 2) centering on the shaft 26 described above. The diameter of the seal reference circle 35 may be fixed to a constant value, or the diameter of the seal reference circle 35 is adjusted by moving the vertical seal portion 32 in the radial direction by a predetermined adjustment mechanism (not shown). It may be possible.

  As shown in FIG. 2, a circumferential conveyance path 211 that forms a part of the packaging material conveyance path 210 is formed in the filler filling portion 15. The circumferential conveyance path 211 is formed so as to extend while curving in a circular arc shape in plan view along a circumferential region from the predetermined start point 213 to the predetermined end point 214 in the seal reference circle 35 described above. The circumferential conveyance path 211 is formed over a region that is not less than a half circumference of the seal reference circle 35.

  As shown in FIGS. 1 and 3, the movable seal bar 34 is connected to the fixed seal bar 33 via an axis (shaft) 36 (see FIG. 1) extending in a direction parallel to the tangent to the seal reference circle 35. Yes. The movable seal bar 34 is separated from the seal position (the position of the right movable seal bar 34 in FIG. 1) that presses against the heating surface of the fixed seal bar 33 via the packaging material 200 and the heating surface of the fixed seal bar 33. It is provided so as to be pivotable around the axis 36 so that it can reciprocate between a non-seal position that has fallen outward (the position of the left movable seal bar 34 in FIG. 1).

  The heating surface of the movable seal bar 34 is a surface facing the heating surface of the fixed seal bar 33 at the sealing position. The movable seal bar 34 engages with a guide mechanism 38 (see FIG. 1) fixed to the main body frame 10 so that the angular position around the shaft 36 changes according to the circumferential position around the shaft 26. Has been. Thereby, when the movable seal bar 34 is located on the circumferential conveyance path 211 in the above-described seal reference circle 35, the movable seal bar 34 is disposed at the seal position, and when it is located in other circumferential regions, the heating surface of the fixed seal bar 33. It is designed to be separated from

  As shown in FIG. 1, the filler filling portion 15 includes a plurality of lifting shafts 43 extending in the vertical direction in parallel with the shaft 26. The plurality of elevating shafts 43 are coupled to the rotary table 31 via an elevating mechanism described later so as to rotate around the shaft 26 together with the rotary table 31. The plurality of elevating shafts 43 are arranged on the circumference around the shaft 26 with a certain interval corresponding to each of the plurality of vertical seal portions 32.

  A funnel-shaped filling chute 48 is connected to the upper part of the elevating shaft 43 via an arm 47. The filling chute 48 is disposed on the above-described seal reference circle 35 (see FIG. 2) in a plan view, and is disposed at the center between the adjacent vertical seal portions 32 in the circumferential direction around the shaft 26 (FIG. 3). reference).

  The lower part of the elevating shaft 43 is supported by an elevating mechanism (not shown) that changes the height positions of the elevating shaft 43 and the filling chute 48 according to the circumferential position around the shaft 26. Thereby, when the lower end part of the filling chute 48 is located on the above-mentioned circumferential conveyance path 211, it is arranged at a lowered position so as to be able to enter the bag part 202 of the packaging material 200, and in the other circumferential region. When positioned, it is retracted to the raised position above the packaging material 200.

[5. Filler supply unit]
As shown in FIGS. 1 and 3, the filler supply unit 16 drops and supplies the filler 203 (see FIG. 4) filled in the bag portion 202 to the filling chute 48. The filler supply unit 16 includes a measuring plate 52 provided so as to be rotatable around an axis 51 extending in the vertical direction, and a supply hopper 54 disposed above the measuring plate 52. The measuring plate 52 is rotationally driven around the shaft 51 by a driving source such as a motor (not shown). The shaft 51 of the filler supply unit 16 is disposed in parallel to the shaft 26 of the turntable 31 and is disposed inside the seal reference circle 35 so as to be offset from the shaft 26 of the turntable 31 in plan view. Yes.

  As shown in FIG. 3, the measuring plate 52 is provided with a plurality of measuring holes 56 therethrough. The plurality of measurement holes 56 are arranged at a predetermined interval on a circumference 58 centered on the shaft 51. As shown in FIG. 2, the circumference 58 is disposed so as to substantially overlap a part of the circumferential conveyance path 211 in a plan view. The measuring hole 56 is disposed above the filling chute 48 in a circumferential region where the circumference 58 and the circumferential conveyance path 211 overlap. In the circumferential region, a shutter mechanism 59 (see FIG. 1) provided between the filling chute 48 and the metering hole 56 is opened, so that a certain amount of filler 203 is transferred from the metering hole 56 to the filling chute 48. It is supposed to be supplied.

[6. Top seal part]
As shown in FIGS. 1 and 3, the top seal portion 17 forms a top seal 204 (see FIG. 4) at the upper edge portion of the packaging material 200. As shown in FIG. 2, the top seal portion 17 is disposed in the extended conveyance path 212 provided in the packaging material conveyance path 210 so as to be continuous with the end point 214 of the circumferential conveyance path 211. The end point 214 of the circumferential conveyance path 211 is also the start point of the extended conveyance path 212.

  As shown in FIGS. 1 and 2, the top seal portion 17 heats by heating the upper edge portion of the packaging material 200 and the upper edge portion of the packaging material 200 heated by the heating portion 60. And a pressurizing unit 66 for sealing.

  In the extended conveyance path 212, the heating unit 60 is provided across a predetermined conveyance area between the end point 214 (the start point 214 of the extended conveyance path 212) of the circumferential conveyance path 211 and the pressurizing unit 66. The heating unit 60 preheats the upper opening edge of each bag unit 202 in the packaging material 200 before sealing by the pressurizing unit 66.

  As shown in FIGS. 2 and 3, the heating unit 60 includes, for example, a pair of heating plates 61 and 62 each having a built-in heater. The pair of heating plates 61 and 62 are long members arranged so as to extend along the extended conveyance path 212. The pair of heating plates 61 and 62 are opposed to each other with a minute clearance. Accordingly, the pair of heating plates 61 and 62 can clamp the upper edge portion of the packaging material 200 with a pressure that does not hinder the movement of the packaging material 200 in the packaging material conveyance direction 206 in the extended conveyance path 212. Yes. The upper edge of the packaging material 200 is heated by contact with the heated heating plates 61 and 62 when passing between the pair of heating plates 61 and 62.

  The pair of heating plates 61 and 62 are supported by the main body frame 10. One heating plate 61 is movable between a facing position facing the other heating plate 62 and a retracted position away from the other heating plate 62, and the other heating plate 62 is fixed to the main body frame 10. ing.

  As shown in FIGS. 1 and 2, the pressurizing unit 66 is disposed adjacent to the downstream side of the heating unit 60 in the packaging material transport direction 206 in the extended transport path 212. The pressure unit 66 includes a pair of seal rollers 67 and 68. The upper edge portion of the packaging material 200 heated in advance by the heating unit 60 is sealed by being pinched by a pair of seal rollers 67 and 68. Thereby, the bag part 202 is completely sealed and the continuous bag body 205 is formed.

  The pair of seal rollers 67 and 68 can be rotationally driven by a drive source (not shown) such as a motor. Thereby, the part pinched by the pair of seal rollers 67 and 68 in the packaging material 200 can be smoothly sent out to the downstream side in the packaging material conveyance direction 206.

  In the packaging material conveyance path 210, the packaging material 200 is sandwiched between the plurality of vertical seal portions 32 disposed in the circumferential conveyance path 211 and the pressurizing portion 66 of the top seal portion 17 disposed in the extended conveyance path 212. The Accordingly, the packaging material 200 can be supported by the plurality of vertical seal portions 32 in the circumferential conveyance path 211 and by the pressurizing unit 66 in the extended conveyance path 212, respectively.

  Further, the packaging material 200 is supported by the guide mechanism 70 (see FIGS. 5 to 9) in the conveyance region from the starting point 214 of the extended conveyance path 212 to the pressure unit 66. The configuration of the guide mechanism 70 will be described later.

[7. Cutting part]
The cutting part 18 is arranged adjacent to the downstream side of the top seal part 17 in the packaging material conveyance direction 206 in the extended conveyance path 212. The cutting unit 18 includes, for example, a rotary cutter 69. The cutter 69 cuts the continuous bag 205 formed by the top seal portion 17 at the center in the short direction of the vertical seal 201 or forms a perforation 207 at the center in the short direction of the vertical seal 201 (FIG. 4). reference).

[8. Operation during continuous operation]
The continuous operation of the packaging machine 1 is performed in a state where the packaging material 200 is set in the packaging material conveyance path 210 including the circumferential conveyance path 211 and the extended conveyance path 212. In addition, the filling material 203 does not need to be filled in the bag part 202 of the packaging material 200 that is already positioned in the circumferential conveyance path 211 and the extended conveyance path 212 at the time of starting the continuous operation of the packaging machine 1.

  The operation of the packaging machine 1 during continuous operation will be described with reference to FIGS. When a predetermined operation button provided on the packaging machine 1 is operated by an operator, a power source of a drive source such as a motor drivingly connected to the rotary table 31 is turned on, and the rotary table 31 is rotated around the shaft 26 in FIG. Rotates counterclockwise. The fixed seal bar 33 and the movable seal bar 34 of the vertical seal portion 32 that rotate together with the rotary table 31 transmit the conveyance force in the packaging material conveyance direction 206 to the packaging material 200.

  Thereby, in the packaging material supply unit 12, the packaging material 200 is unwound from the roll 21 and guided upward by the plurality of rollers 23. The packaging material 200 fed from the last roller 23 has its main surface (front surface and back surface) substantially parallel to the horizontal plane. Thus, the packaging material 200 fed out from the packaging material supply unit 12 is conveyed in the longitudinal direction of the packaging material 200 while being conveyed along the lower surface of the folding guide 24 having a V-shaped cross section in the folding unit 14. Folded around the extended center line.

  In the filler filling unit 15, the elevating shaft 43 and the filling chute 48 are moved up and down by the above lifting mechanism (not shown) in conjunction with the rotation while rotating together with the rotary table 31. The filling chute 48 is disposed at the lowered position in the circumferential region where the circumferential conveyance path 211 is formed, and is disposed at the elevated position in the other circumferential regions.

  In the circumferential conveyance path 211, the packaging material 200 moves in the circumferential direction along with the rotation of the rotary table 31 while being supported by the vertical seal portion 32. During this time, the lower end portion of the filling chute 48 is located between the adjacent vertical seal portions 32.

  When the movable seal bar 34 of the vertical seal portion 32 passes through the starting point 213 of the circumferential conveyance path 211 by the guide by the guide mechanism 38, the seal position (fully closed state) is changed from the non-seal position (fully opened state). Move to. The movable seal bar 34 is held at the seal position in the circumferential region where the circumferential conveyance path 211 is formed, and contacts the fixed seal bar 33 via the packaging material 200.

  Thereby, in the circumferential conveyance path 211, the packaging material 200 portion sandwiched between the heating surfaces of the fixed seal bar 33 and the movable seal bar 34 is heated, and the vertical seal 201 is formed. As a result, a bag portion 202 having an upper edge opened is formed between the adjacent vertical seals 201 in the packaging material 200. In the circumferential conveyance path 211, the packaging material 200 is formed with a plurality of bag portions 202 arranged in the length direction so as to open upward.

  In a circumferential region where the circumference 58 of the filler supply unit 16 overlaps the circumferential conveyance path 211, the filler 203 dropped from the measurement hole 56 is filled into the bag portion 202 of the packaging material 200 via the filling chute 48. .

  The movable seal bar 34 of the vertical seal portion 32 is guided from the seal position to the non-seal position by the guide mechanism 38 when passing through the end point 214 of the circumferential conveyance path 211. As a result, the packaging material 200 is released from the vertical seal portion 32 and fed out from the circumferential conveyance path 211 to the extended conveyance path 212.

  The packaging material 200 is supplied to the extended conveyance path 212 in a state in which the bag portion 202 whose upper edge is opened is filled with the filling material 203. In the extended conveyance path 212, the packaging material 200 is supplied to the top seal portion 17 while being guided by a guide mechanism 70 described later. In the top seal portion 17, the upper edge portion of the packaging material 200 is heated by the heating unit 60 and then pressurized by the pressurizing unit 66, whereby the top seal 204 is formed on the packaging material 200. Thus, in the top seal part 17, the continuous bag body 205 which has the sealed bag part 202 continuously is formed.

  Thereafter, the continuous bag body 205 is conveyed to the cutting unit 18. In the cutting part 18, the vertical seal 201 of the continuous bag body 205 is cut or a perforation 207 is put in the vertical seal 201.

[9. Top seal guide mechanism]
The top seal portion 17 is provided with a guide mechanism 70 that guides the movement of the packaging material 200 along the packaging material conveyance direction 206 in the extended conveyance path 212.

  A specific configuration of the guide mechanism 70 will be described mainly with reference to FIGS. 5 is a plan view of a first guide mechanism 72 (described later) in the guide mechanism 70, and FIG. 6 is a line A arrow in FIG. 5 illustrating the side surfaces of the first guide mechanism 72 and the third guide mechanism 150 (described later). 7 is a perspective view of the first guide mechanism 72 and the third guide mechanism 150 as viewed from the upstream side in the packaging material transport direction 206, and FIG. 8 is a partial view of the first guide mechanism 72. 6 is a cross-sectional view taken along the line C-C of FIG. 6, FIG. 9 is a plan view showing a second guide mechanism 120 described below and its peripheral part, and FIG. 10 is a plan view showing a third guide mechanism 150 in the guide mechanism 70. 11 is a side view showing the third guide mechanism 150, FIG. 12 is a sectional view taken along the line DD of FIG. 11 when the third guide mechanism 150 is viewed from the packaging material conveyance direction 206, and FIG. FIG. 5 shows the first guide mechanism 72 in the continuous operation state of FIG. It is a surface view.

  The guide mechanism 70 includes a first guide mechanism 72 that guides an intermediate portion in the vertical direction of the packaging material 200, and a second guide mechanism 120 that guides the packaging material 200 upstream of the first guide mechanism 72 in the packaging material conveyance direction 206. And a third guide mechanism 150 that guides the lower edge of the packaging material 200 in a region overlapping with the first guide mechanism 72 in the packaging material conveyance direction 206.

  As shown in FIGS. 6 and 7, the first guide mechanism 72 and the third guide mechanism 150 are provided on the base plate 71 supported by the main body frame 10 (see FIGS. 1 to 3). The base plate 71 is disposed along a horizontal plane, for example. The base plate 71 may be fixed to the main body frame 10 or may be attached to the main body frame 10 so as to be movable up and down.

  The base plate 71 is disposed so as to overlap the heating unit 60 and the packaging material conveyance direction 206. The base plate 71 is disposed so as to protrude upstream and downstream of the heating unit 60 in the packaging material conveyance direction 206. The base plate 71 is disposed upstream of the pressurizing unit 66 in the packaging material conveyance direction 206.

  As shown in FIG. 9, the second guide mechanism 120 is supported, for example, in a cantilever manner by, for example, a pipe-like column 127 fixed to the main body frame 10 (see FIGS. 1 to 3). The support 127 is disposed adjacent to the upstream side of the driven roller 82 of the second sandwiching body 80 in the packaging material transport direction 206.

  Hereinafter, each structure of the 1st guide mechanism 72, the 2nd guide mechanism 120, and the 3rd guide mechanism 150 is demonstrated concretely.

[9-1. First guide mechanism]
As shown in FIGS. 5 and 7, the first guide mechanism 72 includes a first sandwiching body 73 and a second sandwiching body 80 that sandwich the packaging material 200. The first clamping body 73 and the second clamping body 80 are arranged in a predetermined conveyance area between the end point 214 of the circumferential conveyance path 211 (start point 214 of the extension conveyance path 212) and the pressurizing unit 66 in the extended conveyance path 212. The packaging material 200 is sandwiched (see FIG. 2).

  The first clamping body 73 is wound around a driving roller 74 that is rotationally driven by a driving mechanism 90 described later, a driven roller 75 that rotates following the rotation of the driving roller 74, and the driving roller 74 and the driven roller 75. An endless belt 76 is provided. The first clamping body 73 further has an auxiliary roller 77 disposed between the driving roller 74 and the driven roller 75 inside the belt 76.

  The drive roller 74, the driven roller 75, and the auxiliary roller 77 have support shafts 74a, 75a, and 77a that are parallel to each other. The support shafts 74a, 75a, and 77a are arranged along the vertical direction, for example. The driving roller 74 and the driven roller 75 are arranged at the same height position in the vertical direction. The auxiliary roller 77 is also disposed at the same height as the driving roller 74 and the driven roller 75 in the vertical direction. The driving roller 74 and the driven roller 75 have, for example, the same diameter. The auxiliary roller 77 also has the same diameter as the driving roller 74 and the driven roller 75, for example. The outer peripheral surface of the auxiliary roller 77 is in contact with the inner peripheral surface of the belt 76 at two locations in the circumferential direction.

  As shown in FIGS. 5 to 8, the support shaft 74 a of the drive roller 74 and the support shaft 77 a of the auxiliary roller 77 are disposed above the base plate 71 and below the drive roller 74 and the auxiliary roller 77 at the respective lower ends. The first movable plate 78 is supported. The support shaft 74a of the drive roller 74 is rotatably supported by the first movable plate 78, and the drive roller 74 is fixed to the support shaft 74a so as to rotate together with the support shaft 74a.

  The lower end portion of the support shaft 77a of the auxiliary roller 77 is fixed to the first movable plate 78, and the auxiliary roller 77 is rotatably supported by the support shaft 77a.

  The support shaft 75a of the driven roller 75 and the support shaft 77a of the auxiliary roller 77 are supported by connecting members 79 disposed above the driven roller 75 and the auxiliary roller 77 at their upper ends. The upper ends of the support shafts 75 a and 77 a are fixed to the connecting member 79. The driven roller 75 is rotatably supported by the support shaft 75a.

  As shown in FIG. 5, the second clamping body 80 includes a driving roller 81 that is rotated by a driving mechanism 90 described later, a driven roller 82 that rotates following the rotation of the driving roller 81, and the driving roller 81 and the driven roller 81. An endless belt 83 wound around the roller 82 is provided.

  The drive roller 81 and the driven roller 82 have support shafts 81a and 82a that are parallel to each other. The support shafts 81a and 82a are arranged along the vertical direction, for example. The driving roller 81 and the driven roller 82 are arranged at the same height position in the vertical direction. The driving roller 81 and the driven roller 82 have, for example, the same diameter.

  As shown in FIGS. 5, 7, and 8, the support shafts 81 a and 82 a of the driving roller 81 and the driven roller 82 are located above the base plate 71 and below the driving roller 81 and the driven roller 82 at the respective lower end portions. The second movable plate 84 is supported. The second movable plate 84 is disposed at the same height as the first movable plate 78 in the vertical direction.

  The support shaft 81a of the drive roller 81 is rotatably supported by the second movable plate 84, and the drive roller 81 is fixed to the support shaft 81a so as to rotate together with the support shaft 81a. The lower end portion of the support shaft 82a of the driven roller 82 is rotatably supported by the second movable plate 84, and the driven roller 82 is fixed to the support shaft 82a so as to rotate together with the support shaft 82a.

  The support shaft 82a of the driven roller 82 may be fixed to the second movable plate 84. In this case, the driven roller 82 is rotatably supported by the support shaft 82a.

  As shown in FIG. 5, the driving roller 74 of the first clamping body 73 and the driving roller 81 of the second clamping body 80 are disposed adjacent to each other with the two belts 76 and 83 interposed therebetween. Thereby, the packaging material 200 can be clamped between the pair of drive rollers 74 and 81.

  The driven roller 75 of the first clamping body 73 is disposed upstream of the driven roller 82 of the second clamping body 80 (on the starting point 214 side of the extended conveyance path 212) in the packaging material conveyance direction 206. The driven roller 75 is disposed at a position overlapping the peripheral edge of the rotary table 31 in plan view (see FIG. 9).

  The auxiliary roller 77 of the first clamping body 73 is disposed adjacent to the driven roller 82 of the second clamping body 80 with the two belts 76 and 83 interposed therebetween. Thereby, the packaging material 200 can be clamped between the auxiliary roller 77 of the first clamping body 73 and the driven roller 82 of the second clamping body 80.

  The facing portion of the belt 76 of the first sandwiching body 73 with the second sandwiching body 80 and the facing portion of the belt 83 of the second sandwiching body 80 with the first sandwiching body 73 are in the packaging material transport direction in the extended transport path 212. They are arranged along 206 and parallel to each other and adjacent to each other. A linear gap is formed between the belt 76 of the first clamping body 73 and the belt 83 of the second clamping body 80, and the packaging material 200 is conveyed through the gap. That is, both belts 76 and 83 constitute part of the extended conveyance path 212.

  The portion constituting the extended conveyance path 212 in the belt 76 of the first clamping body 73 is upstream of the packaging material conveyance direction 206 (extension) compared to the portion constituting the extension conveyance path 212 in the belt 83 of the second clamping body 80. It is arranged so as to protrude toward the start point 214 side of the conveyance path 212. The belt 76 protruding in this way is a receiving portion 76 a that receives a portion sent out from the end point 214 of the circumferential conveyance path 211 (start point 214 of the extended conveyance path 212) in the packaging material 200. The receiving portion 76 a is formed in the belt 76 of the first sandwiching body 73 over a length region equal to the distance between the axial centers between the driven roller 82 and the auxiliary roller 77.

  In a plan view, one seal roller 67 of the pressure unit 66 is disposed adjacent to the downstream side of the packaging material transport direction 206 of the driving roller 74 of the first clamping body 73, and the driving roller 81 of the second clamping body 80. The other seal roller 68 of the pressure unit 66 is disposed adjacent to the downstream side of the packaging material conveyance direction 206. In a plan view, the gap between the pair of seal rollers 67 and 68 of the pressure unit 66 is a linear gap formed between the belt 76 of the first sandwiching body 73 and the belt 83 of the second sandwiching body 80. It is arranged on the extension line.

  As shown in FIGS. 6 and 8, the first guide mechanism 72 further includes a drive mechanism 90 as a drive unit that rotationally drives the first sandwiching body 73 and the second sandwiching body 80.

  The drive mechanism 90 is provided at a lower end portion of a support shaft 74a of a drive roller 74 of the first clamping body 73, for example, an electric motor 91 as a drive source, a drive gear 92 drivingly connected to the motor 91, and a drive gear. 92, the second driven gear 95 provided at the lower end portion of the support shaft 81a of the driving roller 81 of the second clamping body 80, and the middle engaged with the driving gear 92 and the second driven gear 95. A gear 94 is provided.

  The drive gear 92, the first driven gear 93, the intermediate gear 94, and the second driven gear 95 are disposed between the base plate 71, the first movable plate 78, and the second movable plate 84 in the vertical direction.

  The first driven gear 93 and the second driven gear 95 are integrally provided on the support shafts 74 a and 81 a of the drive rollers 74 and 81. However, the first driven gear 93 and the second driven gear 95, which are separate from the support shafts 74a and 81a, may be fixed to the support shafts 74a and 81a. The first driven gear 93 and the second driven gear 95 have the same diameter.

  The drive gear 92 and the intermediate gear 94 are supported by the base plate 71 so as to be rotatable about an axis parallel to the support shafts 74a and 81a of the drive rollers 74 and 81. The drive gear 92 has a larger diameter than the first driven gear 93 and the second driven gear 95, for example. The intermediate gear 94 has the same diameter as that of the drive gear 92, for example.

  When the drive gear 92 is rotationally driven in the clockwise direction in FIG. 8 by the motor 91, the first driven gear 93 and the intermediate gear 94 rotate in the counterclockwise direction in FIG. 8, and the second driven gear 95 in FIG. Rotate clockwise. That is, the first driven gear 93 and the second driven gear 95 rotate in opposite directions. The first driven gear 93 and the second driven gear 95 rotate at the same speed.

  By operating the drive mechanism 90 in this way, the belt 76 of the first clamping body 73 rotates in the counterclockwise direction 221 in FIG. 5, and the belt 83 of the second clamping body 80 rotates in the clockwise direction in FIG. Rotate to 222. Accordingly, the packaging material 200 sandwiched between the belt 76 of the first sandwiching body 73 and the belt 83 of the second sandwiching body 80 is moved in the direction 206 from the starting point 214 toward the pressurizing unit 66 in the extended conveyance path 212. Sent out.

  The thickness of the bag portion 202 of the packaging material 200 varies depending on the presence or absence of the filler 203 in the bag portion 202, the filling amount of the filler 203, the type of the filler 203, the type of the packaging material 200, and the like. If the distance between the belt 76 of the first sandwiching body 73 and the belt 83 of the second sandwiching body 80 is constant, the first sandwiching body 73 and the second sandwiching body 80 depend on the thickness of the bag portion 202 of the packaging material 200. Excess or deficiency may occur in the holding force of the packaging material 200 due to the above. Therefore, in the present embodiment, the packaging machine 1 includes the interval adjusting mechanism 100 that adjusts the interval between the belt 76 of the first holding body 73 and the belt 83 of the second holding body 80.

  As shown in FIGS. 6 to 8, the interval adjusting mechanism 100 includes, for example, an electric motor 101 as a drive source, a pinion gear 102 that is rotationally driven by the motor 101, a first rack 103 that meshes with the pinion gear 102, and a pinion gear 102. A second rack 104 is provided so as to face the first rack 103 with the pinion interposed therebetween and mesh with the pinion gear 102.

  The pinion gear 102, the first rack 103, and the second rack 104 are arranged between the base plate 71, the first movable plate 78, and the second movable plate 84 in the vertical direction. The pinion gear 102 is supported by the base plate 71 so as to be rotatable around an axis extending in the vertical direction. The first rack 103 and the second rack 104 are arranged so as to extend in parallel to each other along a slide direction 111 orthogonal to the vertical direction and the packaging material transport direction 206. The first rack 103 is fixed to the lower surface of the first movable plate 78, and the second rack 104 is fixed to the lower surface of the second movable plate 84.

  The interval adjusting mechanism 100 is arranged in parallel with the first rack 103 and the second rack 104, and is fixed to the upper surface of the base plate 71, and downstream of the first rail 105 in the packaging material conveyance direction 206. 2 further includes a second rail 106 disposed in parallel with the first rail 105 and fixed to the upper surface of the base plate 71.

  A pair of sliders 107 and 108 are fixed to the lower surface of the first movable plate 78. One slider 107 is slidably engaged with the first rail 105, and the other slider 108 is slidably engaged with the second rail 106, respectively. Has been. Similarly, a pair of sliders 109 and 110 are fixed to the lower surface of the second movable plate 84. One slider 109 can slide on the first rail 105 and the other slider 110 can slide on the second rail 106, respectively. Is engaged.

  When the pinion gear 102 is rotationally driven by the motor 101, the first rack 103 and the second rack 104 slide in the opposite directions along the slide direction 111. As a result, the first movable plate 78 and the second movable plate 84 slide in the opposite directions along the slide direction 111 together with the first rack 103 and the second rack 104.

  By such an operation of the gap adjusting mechanism 100, the first holding body 73 supported by the first movable plate 78 and the second holding body 80 supported by the second movable plate 84 are along the slide direction 111. , Slide to move closer to or away from each other. Thereby, for example, as shown in FIG. 5, the distance between the belt 76 of the first sandwiching body 73 and the belt 83 of the second sandwiching body 80 is made relatively small according to the thickness of the bag portion 202 of the packaging material 200. For example, it can be made relatively large as shown in FIG.

[9-2. Second guide mechanism]
As shown in FIG. 9, the second guide mechanism 120 is provided in the transport region between the start point 214 of the extended transport path 212 and the receiving portion 76 a of the first guide mechanism 72. The second guide mechanism 120 includes a bottom surface portion 121 as a first guide portion that supports the packaging material 200 from below, and a side wall portion 122 as a second guide portion that rises from the bottom surface portion 121. The bottom surface portion 121 and the side wall portion 122 are integrally provided, for example. However, the bottom surface portion 121 and the side wall portion 122 may be configured by separate members fixed to each other.

  The bottom surface portion 121 is disposed, for example, along a horizontal plane, and has, for example, an elongated shape that extends along the packaging material conveyance direction 206 in a plan view. The downstream side end portion of the bottom surface portion 121 is disposed below the receiving portion 76a so as to overlap the receiving portion 76a in plan view.

  The lower edge portion of the side wall portion 122 is connected to the edge portion of the bottom surface portion 121 opposite to the receiving portion 76a. The side wall portion 122 is connected to the support column 127 via the connecting member 128. The side wall portion 122 is arranged at a height position overlapping the portion of the packaging material 200 on the extended conveyance path 212 in the vertical direction. It is preferable that the side wall part 122 is provided so that it may overlap with the whole height range of the packaging material 200 in the up-down direction.

  The side wall 122 includes a first side wall 123, a second side wall 124, a third side wall 125, and a fourth side wall 126 that are continuous in the packaging material conveyance direction 206. The 1st side wall part 123, the 2nd side wall part 124, the 3rd side wall part 125, and the 4th side wall part 126 are arrange | positioned in this order from the downstream of the packaging material conveyance direction 206. FIG.

  The first side wall portion 123 is disposed on the outer side in the radial direction than the peripheral edge portion of the turntable 31 in plan view. The first side wall portion 123 is disposed to face the receiving portion 76a. The first side wall portion 123 is disposed in parallel to the receiving portion 76a. Between the receiving part 76a and the 1st side wall part 123, the space | interval of the grade which can pass the bag part 202 of the state with which the filler 203 was filled at least is formed.

  The second side wall portion 124, the third side wall portion 125, and the fourth side wall portion 126 are separated from the receiving portion 76a so as to gradually move away from the receiving portion 76a toward the upstream side in the packaging material conveyance direction 206 in plan view. It is inclined and arranged.

  The second side wall portion 124 is disposed on the outer side in the radial direction than the peripheral edge portion of the turntable 31 in plan view. The second side wall portion 124 is disposed opposite to the receiving portion 76a on the upstream side of the first side wall portion 123 in the packaging material conveyance direction 206, and the interval between the receiving portion 76a and the second side wall portion 124 is set in the packaging material conveyance direction 206. It is gradually expanded toward the upstream side of the.

  The third side wall part 125 and the fourth side wall part 126 are arranged upstream of the receiving part 76a in the packaging material transport direction 206. In plan view, the inclination angle of the third side wall portion 125 with respect to the receiving portion 76a is larger than the inclination angle of the second side wall portion 124 with respect to the receiving portion 76a, and the inclination angle of the fourth side wall portion 126 with respect to the receiving portion 76a is It is larger than the inclination angle of the third side wall 125 with respect to 76a.

  In plan view, the third side wall 125 is disposed so as to straddle the peripheral edge of the turntable 31, and the fourth side wall 126 is disposed on the radially inner side of the peripheral edge of the turntable 31. The third side wall portion 125 is arranged in a direction along a virtual tangent at the end point 214 of the circumferential conveyance path 211 in plan view.

  The portion of the packaging material 200 sent out from the circumferential conveyance path 211 to the extended conveyance path 212 is guided by the bottom surface portion 121 and the side wall portion 122 of the second guide mechanism 120, while receiving the receiving portion 76 a of the first guide mechanism 72 and the second portion. The second guide mechanism 120 is guided to the gap between the belt 76 of the first sandwiching body 73 and the belt 83 of the second sandwiching body 80 in the first guide mechanism 72 through the space between the side walls 122.

  In order to reliably guide the packaging material 200 by the second guide mechanism 120, the packaging machine 1 first blows air from the side opposite to the side wall portion 122 of the second guide mechanism 120 toward the extended conveyance path 212. A first air blowing mechanism 130 as a means, and a second air blowing mechanism 140 as a second air blowing means for blowing air toward a portion upstream of the side wall portion 122 of the second guide mechanism 120 in the extended conveyance path 212. ing.

  In the attached drawings, the first blower mechanism 130 and the second blower mechanism 140 are shown only in FIG. 9 and are not shown in FIGS.

  The first blower mechanism 130 includes a compressor 131 as a blower source, a duct part 132 connected to the compressor 131, and air supplied to the duct part 132 from the compressor 131 to the side wall part 122 of the second guide mechanism 120. The nozzle part 136 which discharges toward is provided.

  The compressor 131 is disposed below the fixed table 30, and is supported by the main body frame 10 via the fixed table 30, for example. The duct part 132 is fixed to the upper surface of the fixed table 30. The duct portion 132 is provided so as to extend radially outward from the predetermined position on the fixed table 30 to the peripheral edge portion of the fixed table 30 toward the side wall portion 122 of the second guide mechanism 120 in plan view.

  A base end portion (radial inner end portion) of the duct portion 132 is connected to the compressor 131 via, for example, a through hole (not shown) of the fixed table 30. Duct portion 132 has a width that gradually expands radially outward in plan view. The end face on the base end side (radially inner side) of the duct part 132 is closed, and the end face on the distal end side (radially outer side) of the duct part 132 is an opening 133 that opens over the entire surface.

  A peripheral wall portion 134 that rises from the rotary table 31 is fixed or integrally provided at the radially inner edge of the rotary table 31. The peripheral wall portion 134 can rotate together with the rotary table 31. The peripheral wall portion 134 is provided over the entire circumference of the rotary table 31. A plurality of through holes 135 are provided in the peripheral wall portion 134 at regular intervals, for example, in the circumferential direction. In the circumferential direction of the peripheral wall portion 134, the interval between the adjacent through holes 135 is such that one or two through holes 135 are arranged to face the opening 133 of the duct portion 132 according to the rotational position of the turntable 31. It is considered as an interval.

  A plurality of nozzle portions 136 are provided at intervals in the circumferential direction of the rotary table 31. The plurality of nozzle portions 136 are arranged at the same angular intervals as the through holes 135 of the peripheral wall portion 134. Each nozzle part 136 is provided so as to extend radially outward from the outer peripheral surface of the peripheral wall part 134. Each nozzle portion 136 has a cross-sectional shape that is elongated in the vertical direction.

  A base end portion (radial inner end portion) of each nozzle portion 136 is provided at a circumferential position that coincides with the through hole 135 in the peripheral wall portion 134 and communicates with the through hole 135. Thereby, each nozzle part 136 can be connected to the duct part 132 through the through hole 135 of the peripheral wall part 134 according to the rotational position of the turntable 31.

  A tip end portion (a radially outer end portion) of each nozzle portion 136 is a discharge port. The discharge port of the nozzle part 136 is formed long and narrow in the vertical direction. The discharge port of the nozzle part 136 is disposed inside the side wall part 122 of the second guide mechanism 120 in the radial direction of the rotary table 31.

  The air supplied from the compressor 131 to the duct portion 132 flows from the discharge port of the nozzle portion 136 connected to the opening portion 133 of the duct portion 132 toward the side wall portion 122 of the second guide mechanism 120. It is sent out in the direction direction.

  The portion of the packaging material 200 sent out from the circumferential conveyance path 211 to the extended conveyance path 212 receives air from the nozzle part 136 of the first air blowing mechanism 130 and is pressed against the side wall part 122 of the second guide mechanism 120. At this time, the packaging material 200 receives air blown from the obliquely upstream side of the extended conveyance path 212. Thereby, the guide of the packaging material 200 along the side wall part 122 is implement | achieved smoothly.

  The 2nd ventilation mechanism 140 is provided with the nozzle part 141 which discharges the air supplied from the ventilation source (not shown). The nozzle portion 141 is supported by the main body frame 10 via a support member 142. The nozzle portion 141 is disposed outside the packaging material 200 in the radial direction of the turntable 31. That is, the nozzle part 141 is disposed on the opposite side of the packaging material 200 from the nozzle part 136 of the first blower mechanism 130.

  The discharge port provided at the tip of the nozzle portion 141 is disposed on the outer side in the radial direction than the peripheral edge portion of the rotary table 31. In the circumferential direction of the turntable 31, the discharge port of the nozzle portion 141 is disposed at substantially the same position as the start point 214 of the extended conveyance path 212. In plan view, the discharge port of the nozzle portion 141 is arranged in a direction inclined radially inward of the turntable 31 toward the downstream side of the packaging material conveyance direction 206 of the extension conveyance path 212.

  The portion of the packaging material 200 sent to the extended conveyance path 212 along the virtual tangent at the end point 214 of the circumferential conveyance path 211 receives air from the nozzle portion 141 of the second air blowing mechanism 140 and receives the second guide mechanism 120. It is smoothly guided to the inner side in the radial direction than the side wall portion 122. Thereby, the smooth guide of the packaging material 200 along the side wall part 122 of the 2nd guide mechanism 120 is realizable.

[9-3. Third guide mechanism]
As shown in FIGS. 6, 7, and 10 to 12, the third guide mechanism 150 includes a guide member 151 as a support portion that supports the packaging material 200 from below in the extended conveyance path 212, and the packaging material 200. And a pair of side walls 153 for guiding the lower edge portion of the rim.

  As shown in the plan view of FIG. 10, the side view of FIG. 11, and the cross-sectional view of FIG. 12, the guide member 151 is a long member that extends in a strip shape along the packaging material conveyance direction 206 of the extended conveyance path 212. The guide member 151 is, for example, a solid plate material. The guide member 151 is composed of a single member. The guide member 151 is made of, for example, stainless steel, but the material of the guide member 151 is not limited to this.

  The short direction of the guide member 151 is arranged in parallel with the slide direction 111 of the first movable plate 78 and the second movable plate 84 (see FIGS. 7 and 8). The width of the guide member 151 in the short direction is larger than the thickness of the guide member 151.

  The upper surface of the guide member 151 is a smooth surface (flat surface) over the entire surface. On the other hand, a plurality of concave grooves 152 are provided on the lower surface of the guide member 151 at regular intervals, for example, in the length direction of the guide member 151 (packaging material conveyance direction 206). Each concave groove 152 is provided so as to extend in a direction orthogonal to the packaging material conveyance direction 206, that is, in a short direction of the guide member 151. Each concave groove 152 is provided over the entire width from one side surface of the guide member 151 to the other side surface (see FIG. 12). Each concave groove 152 has an inverted U-shaped cross-sectional shape (see FIG. 11). Since the plurality of concave grooves 152 are provided on the lower surface of the guide member 151 as described above, the guide member 151 is easily curved as shown in FIG.

  Note that the direction in which the recessed groove 152 extends is not necessarily a direction orthogonal to the packaging material conveyance direction 206 as long as the direction intersects the packaging material conveyance direction 206, and is an inclined direction with respect to the packaging material conveyance direction 206. Also good.

  The guide member 151 is provided with a plurality of insertion holes 158 and 159 that pass through the guide member 151 in the short direction (direction perpendicular to the packaging material transport direction 206). For example, two insertion holes 158 and 159 are provided at intervals in the longitudinal direction of the guide member 151 (packaging material conveyance direction 206). In the packaging material conveyance direction 206, the upstream insertion hole 158 is disposed, for example, between the second concave groove 152 and the third concave groove 152 from the upstream side, and the downstream insertion hole 159 is, for example, It is arranged between the second concave groove 152 and the third concave groove 152 from the downstream side.

  As shown in FIG. 6, the guide member 151 is disposed above the base plate 71 and below the heating unit 60 and the pressing unit 66. The guide member 151 is disposed so as to overlap the heating unit 60 and the pressurizing unit 66 in the packaging material conveyance direction 206. More specifically, the guide member 151 extends from the position upstream of the upstream end of the heating unit 60 to the position downstream of the downstream end of the pressurizing unit 66 in the packaging material conveyance direction 206. ing. That is, in the packaging material conveyance direction 206, the guide member 151 is disposed so as to project upstream from the heating unit 60 and project downstream from the pressurizing unit 66.

  The guide member 151 is disposed below the belt 76 of the first sandwiching body 73 and the belt 83 of the second sandwiching body 80. The guide member 151 is disposed so as to overlap the first and second holding bodies 73 and 80 in the packaging material transport direction 206. In plan view, the guide member 151 is disposed so as to overlap with the gap between the belt 76 of the first holding body 73 and the belt 83 of the second holding body 80. The upstream end of the guide member 151 is disposed so as to overlap with the auxiliary roller 77 in the packaging material conveyance direction 206, and is disposed on the upstream side of the support shaft 77 a of the auxiliary roller 77.

  The guide member 151 is disposed above the base plate 71 and is supported by the base plate 71 via support portions 161 and 164 that rise from the base plate 71. For example, two support portions 161 and 164 are provided at intervals in the longitudinal direction of the guide member 151 (packaging material conveyance direction 206).

  In the short direction of the guide member 151, that is, in the sliding direction 111 of the first movable plate 78 and the second movable plate 84, the support portions 161 and 164 are disposed between the first movable plate 78 and the second movable plate 84. Has been. In the longitudinal direction of the guide member 151 (packaging material conveyance direction 206), the upstream support portion 161 is disposed between the first rail 105 and the second rack 104, and the downstream support portion 164 is the drive gear 92. It is arrange | positioned rather than the downstream. In the packaging material conveyance direction 206, the downstream support portion 164 is disposed so as to protrude downstream from the downstream end portion of the base plate 71.

  Each support 161, 164 is provided with elongated holes 162, 165 extending in the vertical direction. In the packaging material conveyance direction 206, the elongated hole 162 of the upstream support portion 161 is disposed between the auxiliary roller 77 and the second rack 104, and the elongated hole 165 of the downstream support portion 164 is connected to the base plate 71 and the drive. It is arranged downstream of the rollers 74 and 81. The elongated hole 162 of the upstream support portion 161 is disposed so as to overlap with the pressurizing portion 66 and the packaging material conveyance direction 206, and the elongated hole 165 of the downstream support portion 164 is arranged with the heating portion 60 and the packaging material conveyance direction. It overlaps with 206 and is arrange | positioned.

  The guide member 151 includes screws 163 and 166 that are inserted into the elongated holes 162 and 165 of the support portions 161 and 164 and the insertion holes 158 and 159 (see FIG. 11) of the guide member 151, and the distal ends of the screws 163 and 166. It is fixed to the support parts 161 and 164 using a nut (not shown) to be screwed. Thus, the guide member 151 is fixed to the base plate 71 via the support portions 161 and 164.

  The screws 163 and 166 are movable in the vertical direction within the long holes 162 and 165 of the support portions 161 and 164. Therefore, by adjusting the positions of the screws 163 and 166 in the long holes 162 and 165, the relative height positions of the screws 163 and 166 with respect to the base plate 71 can be adjusted.

  Accordingly, the relative height of the guide member 151 with respect to the base plate 71 can be individually adjusted in each of the upstream support portion 161 and the downstream support portion 164. Therefore, the amount of bending and bending deformation of the guide member 151 can be adjusted by adjusting the height of the guide member 151 in the support portions 161 and 164.

  In the example shown in FIG. 6, the guide member 151 is bent and deformed so as to curve downward toward the downstream side in the packaging material conveyance direction 206. Thereby, the guide member 151 is arrange | positioned so that the downward inclination may become large gradually toward the downstream of the packaging material conveyance direction 206. FIG. Further, the most upstream portion of the guide member 151 in the packaging material conveyance direction 206 is disposed so as to extend substantially horizontally.

  The pair of side walls 153 are arranged on one side and the other side of the guide member 151 in the short direction. The side wall 153 is made of, for example, resin, but the material of the side wall 153 is not particularly limited. Each side wall 153 is fixed to the side surface of the guide member 151 at the lower end using, for example, a screw (not shown). Thus, each side wall 153 is disposed so as to protrude from the side edge of the guide member 151 to the upper side of the upper surface of the guide member 151.

  Each side wall 153 is intermittently disposed in the length direction of the guide member 151 (packaging material conveyance direction 206). That is, each side wall 153 is divided into a plurality of side wall portions 154, 155, 156, and 157. Specifically, each side wall 153 includes, for example, a first side wall portion 154, a second side wall portion 155, a third side wall portion 156, and a fourth side wall that are arranged at intervals from the upstream side in the packaging material conveyance direction 206. A side wall 157 is provided.

  Thereby, compared with the case where a side wall is provided continuously over the full length of the guide member 151, restraint of the guide member 151 by the side wall 153 is suppressed. Therefore, it is possible to suppress the bending deformation of the guide member 151 from being inhibited by the restraint by the side wall 153.

  The first side wall portion 154 is attached to the upstream end portion of the guide member 151 in the packaging material conveyance direction 206, and is disposed on the upstream side of the upstream support portion 161. The second side wall part 155 and the third side wall part 156 are arranged between the upstream support part 161 and the downstream support part 164 in the packaging material transport direction 206. The fourth side wall portion 157 is attached to the downstream end portion of the guide member 151 in the packaging material conveyance direction 206, and is disposed on the downstream side of the downstream support portion 164.

  The first side wall portion 154 is disposed so as to overlap with the auxiliary roller 77 in the packaging material conveyance direction 206. The second side wall part 155 and the third side wall part 156 are arranged so as to overlap with the pressing part 66 in the packaging material conveyance direction 206. The fourth side wall portion 157 is disposed so as to overlap with the pressing portion 66 in the packaging material conveyance direction 206.

[10. Operation when setting]
About the operation of the packaging machine 1 when the packaging material 200 is set in the region from the end point 214 of the circumferential conveyance path 211 to the pair of seal rollers 67 and 68 of the pressure unit 66 (hereinafter also referred to as “setting operation”). explain.

  The set operation is performed before continuous operation of the packaging machine 1. Prior to the setting operation, the interval adjustment mechanism 100 adjusts the interval between the belts 76 and 83 of the first guide mechanism 72 and performs predetermined preparation work.

  The setting operation is intended to set the packaging material 200 in a state where the continuous operation of the packaging machine 1 is possible. Therefore, the bag portion 202 of the set packaging material 200 is filled with the filling material 203. It does not have to be. When the setting operation is performed without filling the filling material 203, the bag portion 202 having a very small thickness is supplied to the extended conveyance path 212.

  Therefore, before the setting operation, the distance between the belts 76 and 83 of the first guide mechanism 72 is such that the packaging material 200 can be sandwiched between the belts 76 and 83 by the distance adjusting mechanism 100 and the empty bag portion 202 passes. It is only necessary to adjust the gap to a level that allows the passage of the empty bag portion 202 or the minimum gap that allows the empty bag portion 202 to pass smoothly.

  Further, as a preparatory work before the setting operation, the leading end portion of the packaging material 200 folded in two by the folding portion 14 is placed on the vertical seal portion 32 positioned at the most upstream portion (start point 213) of the circumferential conveyance path 211. It is pinched. The operation of sandwiching the leading end portion of the packaging material 200 with the vertical seal portion 32 at the most upstream portion is manually performed by an operator.

  When a predetermined set button provided on the packaging machine 1 is operated by the operator in a state where the distance adjustment between the belts 76 and 83 and the preparation work are completed, the set operation is executed. In the setting operation, the rotary table 31 is rotated around the shaft 26 by a predetermined amount. At this time, the plurality of vertical seal portions 32 also rotate around the shaft 26 together with the rotary table 31 while appropriately moving the movable seal bar 34.

  Thereby, the front-end | tip part of the packaging material 200 pinched by the vertical seal | sticker part 32 located in the most upstream part of the circumferential conveyance path 211 at the time of a rotation is conveyed in the packaging material conveyance direction 206 along the circumferential conveyance path 211. Thus, the amount of the packaging material 200 fed from the packaging material supply unit 12 to the circumferential conveyance path 211 is increased. At this time, the vertical seal 201 is formed in the sandwiched portion by the vertical seal portion 32 among the packaging material 200 portion positioned in the circumferential conveyance path 211, and as a result, a plurality of bag portions 202 whose upper sides are opened are formed. (See FIG. 4).

  In the setting operation, in the filling material filling unit 15, the elevating shaft 43 and the filling chute 48 are raised and lowered in conjunction with the rotation while rotating together with the rotary table 31, but the bag portion 202 by the filling material supply unit 16. The filler 203 may not be supplied to the container.

  As shown in FIG. 9, the front end portion of the packaging material 200 is released from the vertical seal portion 32 at the end point 214 of the circumferential conveyance path 211 and is fed out to the extended conveyance path 212. The portion of the packaging material 200 fed out to the extended conveyance path 212 is conveyed to the receiving portion 76 a of the belt 76 in the first holding body 73 of the first guide mechanism 72 while being guided by the second guide mechanism 120.

  The portion of the packaging material 200 guided by the second guide mechanism 120 is supported by the bottom surface portion 121 of the second guide mechanism 120 from the lower side, while being blown from the nozzle portion 136 of the first blower mechanism 130, the second guide mechanism 120. By being pressed against the side wall part 122, it is guided to move along the side wall part 122.

  Also, the air from the nozzle portion 141 of the second air blowing mechanism 140 is supplied to the portion of the packaging material 200 located on the upstream side of the second guide mechanism 120 in the extended conveyance path 212. Accordingly, the wrapping material 200 is suppressed from being displaced radially outward of the turntable 31, and the wrapping material 200 is reliably placed on the nozzle portion 136 side of the first air blowing mechanism 130 rather than the side wall portion 122 of the second guide mechanism 120. Can be guided to. Therefore, the packaging material 200 can be smoothly moved from the starting point 214 of the extended conveyance path 212 to the guided portion by the second guide mechanism 120.

  The portion of the packaging material 200 that has reached the receiving portion 76a of the first guide mechanism 72 moves in the packaging material transport direction 206 (left direction in FIG. 9) together with the belt 76 in a state of being in contact with the belt 76, and the first sandwiching body. 73 is introduced into the gap between the belt 76 of the belt 73 and the belt 83 of the second clamping body 80.

  As shown in FIG. 5, at the entrance portion of the gap between the belts 76 and 83, the bag portion 202 of the packaging material 200 is between the auxiliary roller 77 of the first sandwiching body 73 and the driven roller 82 of the second sandwiching body 80. The bag portion 202 of the packaging material 200 is sandwiched between the drive rollers 74 and 81 of the first sandwiching body 73 and the second sandwiching body 80 at the exit portion of the gap between the belts 76 and 83.

  Therefore, in the first guide mechanism 72, the force to draw into the gap between the belts 76 and 83 from the upstream side of the extended conveyance path 212 and the force to draw out from the gap to the downstream side can be reliably transmitted to the packaging material 200. .

  Since it is not necessary to seal the upper edge of the packaging material 200 during the setting operation, in the heating unit 60 through which the upper edge of the packaging material 200 passes, one heating plate 61 is retracted to the retracted position. Also good.

  The leading end portion of the packaging material 200 fed out from the first guide mechanism 72 is continuously supplied to the pressure unit 66, and the upper edge portion of the packaging material 200 is sandwiched between the pair of seal rollers 67 and 68 of the pressure unit 66. Is done. Thereby, the setting of the packaging material 200 with respect to the circumferential conveyance path 211 and the extended conveyance path 212 is completed.

  When the setting of the packaging material 200 is completed, the operations of the rotary table 31 and the drive mechanism 90 of the first guide mechanism 72 are stopped, and the conveyance of the packaging material 200 is completed. At this time, the operation of the first air blowing mechanism 130 and the operation of the second air blowing mechanism 140 may also be stopped. Thereby, a series of set operations is completed.

  As described above, the packaging machine 1 according to the present embodiment includes the guide mechanism 70 provided between the vertical seal portion 32 on the circumferential conveyance path 211 and the pressure unit 66 on the extension conveyance path 212. Also, the packaging material 200 can be supported and transported. Therefore, the series of setting operations described above can be automatically performed by the packaging machine 1. Therefore, the setting operation of the packaging material 200 can be simplified and the time can be shortened, whereby the labor of the operator can be reduced, safety can be improved, and productivity can be improved.

[11. Action of guide mechanism during continuous operation]
During the continuous operation of the packaging machine 1, the portion of the packaging material 200 fed from the end point 214 of the circumferential conveyance path 211 to the extended conveyance path 212 includes the first guide mechanism 72, the second guide mechanism 120, and the third guide mechanism 150. And passing through the heating unit 60 and the pressurizing unit 66.

  The first guide mechanism 72 moves along the gap between the belts 76 and 83 while supporting the entire length of the packaging material 200 passing through the heating unit 60 (see FIG. 6) positioned above the first guide mechanism 72. The packaging material 200 is guided. The size of the gap between the belts 76 and 83 can be adjusted by the interval adjusting mechanism 100 described above. Therefore, the gap between the belts 76 and 83 is adjusted in advance before the start of continuous operation in accordance with the thickness of the bag portion 202 filled with the filler 203, so that The two sandwiching bodies 80 can sandwich the packaging material 200 with an appropriate force that does not hinder the movement of the packaging material 200.

  As shown in FIGS. 6 and 7, the portion of the packaging material 200 heated by the heating unit 60 is guided not only by the first guide mechanism 72 but also by the third guide mechanism 150 positioned below the belts 76 and 83. Is done. The portion of the packaging material 200 that is heated by the heating unit 60 is supported by the first guide mechanism 72 at the intermediate portion in the vertical direction and supported by the third guide mechanism 150 at the lower edge. The third guide mechanism 150 supports the lower edge portion of the packaging material 200 from the lower side by the guide member 151, and regulates the lateral displacement of the packaging material 200 by the pair of side walls 153.

  By the way, the upper edge part of the packaging material 200 is extended when passing the heating part 60 and the pressurization part 66 in the case of a continuous operation driving | operation. Further, the bottom portion of the bag portion 202 of the packaging material 200 bulges sideways in a state in which the filling material 203 such as powder is filled. Therefore, in the extended conveyance path 212, the packaging material 200 is bent and deformed so that the upper edge portion is slightly longer than the lower edge portion, and is curved downward slightly toward the downstream side in the packaging material conveyance direction 206. To do. Therefore, as shown in FIG. 6, the guide member 151 is arranged so as to be gradually lowered toward the downstream side in the packaging material conveyance direction 206, so that the packaging material 200 is stably supported by the guide member 151. it can.

  The portion of the packaging material 200 that has passed through the heating unit 60 is fed out from the gap between the belts 76 and 83 of the first guide mechanism 72 and supplied to the pressurizing unit 66. In a plan view, the gap between the pair of seal rollers 67 and 68 of the pressure unit 66 is in the packaging material conveyance direction with respect to the gap between the pair of drive rollers 74 and 81 located at the outlet of the first guide mechanism 72. It is arranged adjacent to the downstream side of 206. Therefore, the portion of the packaging material 200 fed out from the first guide mechanism 72 can be reliably and smoothly supplied between the pair of seal rollers 67 and 68.

  The guide member 151 of the third guide mechanism 150 extends below the pair of seal rollers 67 and 68 of the pressurizing unit 66 to a portion downstream of the seal rollers 67 and 68. As a result, the portion of the packaging material 200 that is pressurized by the pressure unit 66 can also be guided by the third guide mechanism 150.

  The portion of the third guide mechanism 150 that supports the lower edge of the packaging material 200 is configured by the upper surface of one guide member 151 in the entire region from the upstream side of the heating unit 60 to the downstream side of the pressure unit 66. . The upper surface of the guide member 151 is a smooth surface that is seamless over the entire length. Therefore, it is possible to suppress the lower edge portion of the packaging material 200 moving in the packaging material conveyance direction 206 from being caught on the upper surface of the guide member 151.

  By the action of the first guide mechanism 72, the second guide mechanism 120, and the third guide mechanism 150 as described above, the smooth movement of the packaging material 200 in the packaging material conveyance direction 206 can be realized in the extended conveyance path 212. Therefore, during continuous operation, the upper edge of the packaging material 200 in the heating unit 60 and the pressurizing unit 66 is effectively prevented from being displaced, loosened, caught, bent, and the like. The sealing accuracy of the part can be improved. Moreover, also in the cutting | disconnection part 18 (refer FIG.1 and FIG.2) located in the downstream of the pressurization part 66, since the position shift of the vertical seal | sticker 201 of the packaging material 200 with respect to the cutter 69 is suppressed effectively, it cuts. The process accuracy can be improved.

  While the present invention has been described with reference to the above-described embodiments, the present invention is not limited to the above-described embodiments.

  For example, as the distance adjusting mechanism for adjusting the distance between the first holding body 73 and the second holding body 80 in the first guide mechanism 72, various configurations other than the above-described mechanism 100 (see FIG. 8) are employed. obtain.

  For example, instead of the interval adjusting mechanism 100 shown in FIG. 8, an interval adjusting mechanism 300 including an air cylinder 310 as a drive source may be used as shown in FIG. In the interval adjusting mechanism 300 shown in FIG. 14, one end 312 of the air cylinder 310 is fixed to the first movable plate 78. According to such a configuration, the first movable plate 78 is slid along the slide direction 111 by driving the air cylinder 310 to extend and contract, and the second movable plate 84 is moved along the slide direction 111 in conjunction with this. The first movable plate 78 is slid to the opposite side. Accordingly, as in the above-described embodiment, the first sandwiching body 73 supported by the first movable plate 78 and the second sandwiching body 80 supported by the second movable plate 84 are in the direction of approaching or separating from each other. Move the slide. Thereby, the clearance gap between the 1st clamping body 73 and the 2nd clamping body 80 is adjusted.

  In addition to the first air blowing mechanism 130 (FIG. 9) described above, various configurations are adopted as the air blowing means for blowing air from the side opposite to the side wall portion 122 of the second guide mechanism 120 toward the extended conveyance path 212. Can do.

  For example, instead of the first air blowing mechanism 130 shown in FIG. 9, a air blowing mechanism 230 as shown in FIG. 15 may be used as the air blowing means. A blower mechanism 230 shown in FIG. 15 includes a plurality of nozzle portions 231, 232, and 233 fixed to the main body frame 10 via support members 234, 235, and 236, respectively. The plurality of nozzle portions 231, 232, and 233 are arranged at different positions so that air can be blown toward the side wall portion 122 of the second guide mechanism 120. Also with the configuration of the air blowing mechanism 230, the second guide mechanism 120 can smoothly guide the packaging material 200.

  Further, as a driving means for rotating the sandwiching bodies 73 and 80 of the first guide mechanism 72, a driving mechanism 90 (see FIGS. 8 and 14) that rotationally drives both the first sandwiching body 73 and the second sandwiching body 80 is used. Instead, a drive mechanism that rotates only one of the sandwiching bodies may be used.

1: Filling and packaging machine 10: Main body frame 12: Packaging material supply unit 14: Folding unit 15: Filling material filling unit 16: Filling material supply unit 17: Top seal unit 18: Cutting unit 30: Fixed table 31: Rotating table 32 : Vertical seal part 60: heating part 66: pressure part 70: guide mechanism 72: first guide mechanism 73: first clamping body 76: belt 76a: receiving part 80: second clamping body 83: belt 90: drive mechanism ( Driving means)
100: Space adjustment mechanism 120: Second guide mechanism 122: Side wall (guide part)
130: 1st ventilation mechanism 136: Nozzle part 140: 2nd ventilation mechanism 141: Nozzle part 150: 3rd guide mechanism 151: Guide member 152: Concave groove 153: Side wall 200: Packaging material 201: Vertical seal 202: Bag part 203 : Filling material 204: Top seal 205: Continuous bag body 206: Packaging material conveyance direction 207: Perforation 300: Spacing adjustment mechanism

Claims (4)

While the belt-like packaging material supplied continuously is conveyed along a circumferential conveyance path extending horizontally in a substantially arc shape in plan view and an extended conveyance path connected to the end point of the circumferential conveyance path, Filling each of the bag portions with a filler while forming a plurality of bag portions arranged in the length direction of the packaging material in the conveyance path so that the upper sides thereof are opened, and in the extended conveyance path, the packaging material A filling and packaging machine that seals the bag portion by sequentially performing heating by the heating portion and clamping by the pressure portion on the upper edge portion,
The heating unit is disposed over a predetermined conveyance region between the end point of the circumferential conveyance path and the pressure unit in the extended conveyance path,
A guide member that supports the packaging material from below is provided below the heating unit,
The guide member is curved downward so as to continue from a position upstream of the upstream end of the heating unit to a position downstream of the downstream end of the pressurizing unit in the conveyance direction of the packaging material. A filling and packaging machine characterized by being a single member extending.   The lower surface of the guide member is provided with a plurality of concave grooves extending in a direction intersecting with the conveyance direction of the packaging material and spaced apart from each other in the length direction of the guide member. 1. The filling and packaging machine according to 1. A base plate that supports the guide member is disposed below the guide member,
The pressurizing portion is disposed on the downstream side of the base plate in the conveyance direction of the packaging material, and the guide member is disposed so as to protrude downstream from the pressurizing portion. The filling and packaging machine according to claim 1 or claim 2.   The side wall which protrudes upward from the side edge part of the said guide member is provided intermittently in the length direction of the said guide member, The Claim 1 characterized by the above-mentioned. Filling and packaging machine.

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