JP4851849B2 - Vertical bag making and filling machine - Google Patents

Description

  The present invention relates to a vertical bag making filling and packaging machine.

Conventionally, the end of a sheet-like packaging material is vertically sealed to form a cylinder, which is conveyed from above to below, and the cylindrical packaging material is laterally sealed to form a bag bottom, which is further conveyed. On the other hand, there is known a vertical bag-filling and packaging machine that continuously manufactures a bag-like package by dropping and filling an inside to be filled, transporting it for a predetermined distance, and performing horizontal sealing. Moreover, what manufactures the bag with a zipper by providing a zipper sealer adjacent to the horizontal sealer of this vertical bag making filling packaging machine is known.
In such a vertical bag making and filling and packaging machine, if the article to be filled is caught in the sealing position of the horizontal sealer and the zipper sealer, the bag making becomes defective. For this reason, there is known an apparatus provided with a fall blocking means for preventing the fall of the filling material upstream from the sealing position and a rising blocking means for blocking the filling material rising from below at the downstream side of the sealing position. ing.
In addition, when filling a powdery or particulate lightweight filling material, such as wheat flour or bread crumbs, the packing material being filled is fixed so that a predetermined amount of the filling material is filled into a predetermined bag volume. In many cases, an air venting means for releasing air by pressing from the side is provided.
For example, in Patent Document 1, a shutter plate and a squeeze plate that move forward and backward with respect to the cylindrical packaging material together with the horizontal sealing jaw are provided above and below the horizontal sealing jaw that is a horizontal sealer, respectively, There is described a packaging machine provided with a pair of air bleed plates for releasing air by pressing from the side so as to keep the thickness of the material constant.
JP-A-6-263117

However, the conventional vertical bag making and filling machine as described above has the following problems.
In the technique disclosed in Patent Document 1, a cylindrical packaging material is sandwiched between a horizontal seal jaw, a shutter plate, and a squeeze plate that are integrally provided at the tip of a swivel arm. It is possible to block the filling material that soars from below. For this reason, after the shutoff by them, even if the filling material falls or soars, the seal does not become defective, but the filling material floating between them remains during the shutting operation of the shutter plate and the squeaking plate, May be trapped in between. That is, there is a problem that the defect that the filling object is bitten at the time of horizontal sealing or zipper sealing cannot always be sufficiently reduced.

  The present invention has been made in view of the above-described problems, and provides a vertical bag-filling and packaging machine capable of reducing the occurrence of poor sealing such as a lateral seal due to biting of an object to be filled. Objective.

In order to solve the above-mentioned problems, in the invention described in claim 1, the cylindrical packaging material is conveyed from the upper side to the lower side, the filling material is dropped into the inside, filled, and then laterally sealed. A vertical bag-making filling and packaging machine for bagging, wherein a closing means for closing an inner passage of the cylindrical packaging material and blocking a falling filling material and a side facing the cylindrical packaging material to each other A pair of horizontal sealers that are crushed from the side and sealed along a direction intersecting the conveying direction, and a horizontal sealer moving means for moving the pair of horizontal sealers forward and backward with respect to the cylindrical packaging material along the opposing direction And a lift blocking means that closes an internal passage of the cylindrical packaging material and blocks a material that rises from the downstream side, the drop blocking means, the horizontal sealer, the horizontal sealer moving means, and the lift blocking Control for controlling each operation of the means The drop blocking means, the horizontal sealer, and the soaring blocking means are arranged in this order from the upstream side along the transport direction, and the control means controls the drop blocking means to form the tubular shape. The internal passage of the packaging material is closed, and after a certain period of time, the internal passage of the tubular packaging material is further closed by the rise blocking means, and then the lateral sealer performs lateral sealing.
According to the present invention, the internal passage of the cylindrical packaging material is closed by the fall blocking means, and after a certain time, the internal passage of the cylindrical packaging material is further closed by the floating blocking means, and then the horizontal sealer Since the sealing is performed, the filling material on the downstream side in the transport direction of the drop blocking means falls through the internal passage within a certain time. After that, the internal passage is further closed by the rising blocking means, so that even if the filling material rises thereafter, the filling object does not enter between the fall blocking means and the rising blocking means. And since a horizontal sealer is moved after that and a horizontal seal is carried out, a favorable horizontal seal can be performed, without a to-be-filled material being bitten in the meantime.
Here, the said fixed time can be suitably set according to conditions, such as the fall speed of a to-be-filled material.
Moreover, here, closing the internal passage of the cylindrical packaging material means closing so that the filling material does not circulate. That is, it means a closed state where air in the internal passage and a filling gas such as an inert gas replacing the air can be circulated and an object to be filled cannot circulate.

According to a second aspect of the present invention, in the vertical bag making filling and packaging machine according to the first aspect, at least one of the drop blocking means and the rising block means intersects the cylindrical packaging material in the transport direction. And a pair of blocking plates arranged so that the positions of their tip portions are shifted in the transport direction, and blocking plate moving means for moving the pair of blocking plates back and forth in the opposite direction to each other. The configuration.
According to this invention, the pair of shielding plates arranged with the positions of the tip portions of each other shifted in the transport direction are advanced in the opposing direction by the shielding plate moving means, and the packaging material is laterally placed between them. By setting it in a crushed state, the internal passage can be closed. The degree of closure can be changed by adjusting the respective advance positions and changing the degree to which the packaging material is bent in a zigzag shape.
And since the position of a front-end | tip part is shifted in the conveyance direction, an internal channel | path can be closed without pressing each other at the time of advancing of a shielding board between shielding boards. Therefore, the internal passage can be closed without biting and pulverizing the material to be filled between the front end portions of the shielding plate or damaging the packaging material. Moreover, it becomes easy to close to such an extent that a to-be-filled material does not distribute | circulate and gas, such as air, distribute | circulates.

According to a third aspect of the present invention, in the vertical bag making and filling and packaging machine according to the second aspect, the drop blocking means includes the pair of blocking plates, and the pair of blocking plates are connected to the pair of horizontal plates. By providing each of the sealers, the horizontal sealer moving means also serves as the blocking plate moving means of the drop blocking means, and the horizontal sealer moving means sets the position when the horizontal sealer is advanced to the drop blocking means. A first advancing position where the pair of blocking plates close the internal passage of the packaging material, and a second advancing position where the cylindrical packaging material is crushed by the lateral sealer to enable lateral sealing. The configuration is such that the position can be switched to at least two stages.
According to this invention, since the horizontal sealer moving means also serves as the blocking plate moving means of the drop blocking means, a simple and compact configuration can be achieved.
Further, the horizontal sealer is moved to the first advanced position by the horizontal sealer moving means, and the internal passage is closed by the pair of blocking plates of the drop blocking means provided on the horizontal sealer. Then, after a certain time, the internal passage of the packaging material is closed by the rising block means, and then the horizontal sealer can be advanced to the second advanced position to perform horizontal sealing.
Therefore, by controlling the arrival timing of each of the first advance position and the second advance position, the horizontal sealer moving means moves the function of the blocking plate moving means of the drop blocking means and the horizontal sealer to perform horizontal sealing. Compatibility with functions is easy.

According to a fourth aspect of the present invention, in the vertical bag making and filling and packaging machine according to the second or third aspect, the rising block means includes the pair of blocking plates, and the horizontal sealer and the rising block means A pair of zipper sealers for affixing the zipper members disposed on the packaging material to the packaging material, and a zipper sealer movement for moving the pair of zipper sealers forward and backward with respect to the cylindrical packaging material in a direction opposite to each other And the zipper sealer moving means is provided with a pair of blocking plates of the rising blocking means so as to serve as the blocking plate moving means of the rising blocking means, and the zipper sealer movement of the pair of blocking plates The mounting position with respect to the means is selectively switched between the position of the pair of zipper sealers and the position of the pair of zipper sealers on the downstream side in the transport direction. And the zipper sealer moving means sets the position when the zipper sealer is advanced to a state where the internal passage of the packaging material is closed by the pair of blocking plates of the baffle blocking means. And the fourth advance position where the tubular packaging material is crushed by the zipper sealer so that the zipper member can be attached.
According to this invention, a bag with a zipper can be made by providing a pair of zipper sealers. The rising block means includes a pair of blocking plates, and by attaching these blocking plates to the zipper sealer moving means, the zipper sealer moving means can also serve as the blocking plate moving means of the rising block means. Furthermore, the lift-off blocking means can be selectively switched between the position of the zipper sealer and the position downstream of the zipper sealer in the transport direction, so that the zipperless bag making and zippered bag making Either can be supported.
In addition, the internal passage of the packaging material is blocked by the drop blocking means, and after a certain time, the zipper sealer is moved to the third advanced position by the zipper sealer moving means, and a pair of blocking plates of the rising blocking means provided on the zipper sealer To close the internal passage. Then, the zipper sealer can be moved by the zipper sealer moving means to advance to the fourth advance position.
Therefore, by controlling the arrival timing of each of the third advance position and the fourth advance position, the zipper sealer moving means has a function of the blocking plate moving means of the rising and closing means and a function of moving the zipper sealer to perform the zipper seal. Coexistence becomes easy.

According to a fifth aspect of the present invention, in the vertical bag making filling and packaging machine according to any one of the first to fourth aspects, the upstream side of the transport direction is directed from the upstream side of the transport direction toward the downstream side of the lift blocking means. Of the filling portion in the packaging material, provided with a pair of pressing plates that are opposed to each other so as to increase the facing distance and that can be pressed by sandwiching the packaging material filled with the filling material from the side. It is set as the structure provided with an air venting means.
According to this invention, since the air venting means is provided, it is possible to discharge excess gas from the packaging material and fill a certain amount of the packaging material with a certain volume of the packaging material.
Further, since the packaging material is sandwiched and pressed from the side by a pair of pressing plates opposed so as to increase the facing distance from the upstream side toward the downstream side in the transport direction, The article to be packaged is pressed so as to gradually move from the upstream side toward the downstream side. Therefore, compared with the case where it presses simultaneously toward the downstream side from an upstream side, the rising of a to-be-filled material can be reduced.

According to a sixth aspect of the present invention, in the vertical bag making and filling and packaging machine according to the fifth aspect, after the pair of pressing plates closes the internal passage by the lift blocking means, It is moved to start pressing the filled packaging material, decelerated during pressing, and controlled to stop before the zipper sealer reaches the fourth advanced position.
According to the present invention, the air venting operation by the pair of pressing plates is started after the internal passage is closed by the lift blocking means, pressed under deceleration, and finished before the zipper sealer reaches the fourth advanced position. The Therefore, in the air venting operation, it is possible to further reduce the momentum of the filling material as compared with the case where the filling material is pressed at a constant speed or acceleration, and the action of closing the internal passage by the rising blocking means In combination, it is possible to reliably prevent the filling material from rising and being caught between the zipper seal portion, the lateral seal portion, and both the seal portions during the subsequent zipper seal.

According to a seventh aspect of the present invention, in the vertical bag making filling and packaging machine according to any one of the first to third aspects, the upstream side of the transport direction is directed from the upstream side of the transport direction toward the downstream side of the lift blocking means. Of the filling portion in the packaging material, provided with a pair of pressing plates that are opposed to each other so as to increase the facing distance and that can be pressed by sandwiching the packaging material filled with the filling material from the side. An air venting means, and the pair of pressing plates are moved so as to start pressing the packaging material filled with the material to be filled after the internal passage is closed by the rise blocking means, Controlled to decelerate and stop the lateral sealer before closing the internal passage.
According to the present invention, the air venting operation by the pair of pressing plates is started after the internal passage is closed by the lift blocking means, is pressed under deceleration, and is finished before the lateral sealer closes the internal passage. . Therefore, in the air venting operation, it is possible to further reduce the momentum of the filling material as compared with the case where the filling material is pressed at a constant speed or acceleration, and the action of closing the internal passage by the rising blocking means In combination, it is possible to reliably prevent the filling material from rising and being caught in the horizontal seal portion at the time of the horizontal seal performed thereafter.

  According to the vertical bag making and filling machine of the present invention, the internal passage of the cylindrical packaging material is closed by the drop blocking means, and is closed by the rising blocking means after a certain time on the downstream side in the conveyance direction of the horizontal sealer. There is an effect that it is possible to reduce the occurrence of a sealing failure such as a lateral seal due to the biting of the filler.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
A vertical bag making and filling machine according to an embodiment of the present invention will be described.
FIG. 1 is a schematic perspective view showing a schematic configuration of a vertical bag making filling and packaging machine according to an embodiment of the present invention. FIG. 2 is a front view showing a schematic configuration of a main part of the vertical bag making filling and packaging machine according to the embodiment of the present invention. Drawing 3 is a typical side view explaining arrangement of the main member in the principal part of the vertical bag making filling packaging machine concerning the embodiment of the present invention. FIG. 4 is a partial cross-sectional view of the vertical bag making filling and packaging machine according to the embodiment of the present invention as viewed from the front. FIG. 5 is a plan view of a vertical bag making filling and packaging machine according to an embodiment of the present invention. FIG. 6 is a plan view showing a schematic configuration of air bleeding means of the vertical bag making filling and packaging machine according to the embodiment of the present invention. FIG. 7 is a cross-sectional view taken along the line AA of FIG. 8 is a cross-sectional view taken along line BB in FIG.
Note that the XYZ orthogonal coordinate system described in each figure is arranged in a common direction in each figure for convenience of direction reference. The XY plane represents a horizontal plane, and the positive Z-axis direction is aligned vertically upward. Hereinafter, the direction in the drawing may be expressed with reference to these coordinate axes.

As shown in FIG. 1, the vertical bag making and filling and packaging machine 100 of the present embodiment forms a cylindrical packaging material Wa (cylindrical packaging material) by vertically sealing the end of a packaging material W such as a film. , Transported vertically from top to bottom (from the Z-axis positive direction to the negative direction), laterally sealed at the lower end side to form a bottom portion, and from inside the top to be packaged (for example, powder or granular material) Filling the object to be filled (not shown), extending it downward by a certain length, horizontally sealing the upper end side, and affixing the zipper member 5 temporarily fixed to the tubular packaging material Wa repeatedly. The packaging bag Wb with the zipper J filled with the package is continuously manufactured.
As the material of the packaging material W, a plastic film, a laminate film, or the like can be adopted as appropriate.
The form and shape of the zipper member 5 are not particularly limited as long as they can be attached to the packaging material W, and various known ones can be adopted.

The schematic configuration of the vertical bag making filling and packaging machine 100 includes a film roll 1 that supplies the packaging material W, a plurality of conveyance rollers 2 that convey the packaging material W, and a packaging material W that is conveyed by the conveyance rollers 2 in the width direction. A former part 3a that is superposed with the ends facing each other and shaped into a substantially cylindrical tubular packaging material Wa having the Z axis as an axial direction, and the shape of the tubular packaging material Wa is maintained in the negative direction of the Z axis. A bag-making tube 3 that is directed toward the bag, a feeding belt 6 that intermittently feeds the cylindrical packaging material Wa in the negative Z-axis direction on the bag-making tube 3, and a cylindrical packaging material Wa that is intermittently conveyed by the feeding belt 6 A vertical seal 7 for vertical sealing across the combined ends, a hopper 8 for filling the filling space inside the bag-making tube 3 from above, and drop blocking plates 9A and 9B (drop blocking) Means blocking plate), horizontal sealer 10 , 10B, Jippashira 11A, 11B, soars blocking plate 12A, 12B (blocking plate of soaring blocking means), the air vent pressure plate 14A, 14B (pressing plate), and a discharge guide 31.
Further, the horizontal blocker moving unit 51 for moving the drop blocking plates 9A and 9B, the horizontal sealers 10A and 10B, the zipper sealers 11A and 11B, the flying block plates 12A and 12B, and the air release pressing plates 14A and 14B, respectively. (Horizontal sealer moving means), zipper sealer moving part 52 (zipper sealer moving means), and pressing plate moving part 54 are connected. The operations of these and other mechanisms are controlled by the control unit 55 (control means).
In addition, although this embodiment demonstrates the case where the conveyance direction (henceforth only a conveyance direction) of cylindrical packaging material Wa is a vertically downward direction, this is an example, For example, for example, As long as there is no inconvenience in the operation such as dropping, it may be inclined from a strict vertical direction.
In this embodiment, the packaging material W is supplied to the bag making tube 3 from the X axis positive direction side.

As shown in FIG. 2, a bag opening member 3 b for forming the cylindrical packaging material Wa into a flat bag shape is provided at the lower end of the bag making tube 3 below the bag making tube 3.
The drop blocking plates 9A and 9B are members each having an L-shaped and an inverted L-shaped cross section and extending in the Y-axis direction in a state where the horizontal portion is stepped in the Z-axis direction. On the lower side of the bag opening member 3b, the cylindrical packaging material Wa is opposed to each other in the X-axis direction, and is provided so as to be able to advance and retreat in the opposing direction.
The front ends in the opposing direction of the horizontal portions of the drop blocking plates 9A and 9B have a tapered taper. Further, the horizontal portions of the drop blocking plates 9A and 9B are arranged at positions close to the upper surfaces of horizontal sealers 10A and 10B described later in the Z-axis direction.
At both ends (see FIG. 5) of the drop blocking plates 9A and 9B in the Y-axis direction, stoppers 9a and 9b with which the respective tips come into contact are provided in order to restrict the positions when they are advanced. The advance positions of the drop blocking plates 9A and 9B are aligned with the center line of the bag making tube 3, or more preferably set at a position slightly exceeding the facing direction.
In the present embodiment, the position is set slightly beyond. Therefore, the respective tip portions are arranged in steps in the Z-axis direction, so that the cylindrical packaging material Wa crushed at each tip surface at the time of advancement is bent in a zigzag shape in front view, and the internal passage P is formed. It is supposed to be closed.

A guide shaft 20 extended in the X-axis direction is fixed to the rear side (X-axis negative (positive) direction side) of the drop blocking plate 9A (9B) in order to advance and retract the drop blocking plate 9A (9B). ing.
The guide shaft 20 is inserted into the guide hole 22a of the blocking plate holding bracket 22A (22B) that transmits a driving force for moving the drop blocking plate 9A (9B) forward and backward, and the blocking plate at the end on the X-axis negative (positive) direction side. The retaining bracket 22A (22B) is prevented from coming off.
The guide shaft 20 between the back side of the drop blocking plate 9A (9B) and the blocking plate holding bracket 22A (22B) has a spring 21 for urging the drop blocking plate 9A (9B) in the positive (negative) direction of the X axis. Is inserted.
For this reason, when the blocking plate holding bracket 22A (22B) moves in the X-axis positive (negative) direction, the drop blocking plate 9A (9B) biased by the spring 21 moves in the X-axis positive (negative) direction. It has become. Further, when the blocking plate holding bracket 22A (22B) moves in the X-axis negative (positive) direction, the drop blocking plate 9A (9B) moves in the X-axis negative (positive) direction through the retaining of the guide shaft 20. It is supposed to be.

The horizontal sealers 10A and 10B are block-like members disposed substantially parallel to the lower sides of the drop blocking plates 9A and 9B, respectively, and the cylindrical packaging material Wa is moved to the side at a timing linked to the feeding operation of the feeding belt 6. It crushes from one side and seals (transverse seal) along the direction intersecting the conveying direction.
The horizontal sealers 10A and 10B are arranged on the negative side and the positive direction side of the cylindrical packaging material Wa, respectively, and press the cylindrical packaging material Wa from the side to form a horizontal seal portion in the Y-axis direction. The pressing surfaces 10a and 10a that are extended to a long distance are arranged facing each other. That is, each pressing surface 10a is extended in a direction crossing the transport direction. Hereinafter, the direction in which each pressing surface 10a is extended may be referred to as a horizontal sealing direction.
The length of the pressing surface 10a in the Y-axis direction is a length that can be traversed in the width direction (Y-axis direction) in a state in which the cylindrical packaging material Wa is crushed.
Here, when crushing the cylindrical packaging material Wa, various crushing methods are possible depending on the shape of the target bag. For example, the cylinder may be simply crushed or may be crushed to form a gusset portion.

Then, the horizontal sealers 10A and 10B are moved symmetrically along the opposing direction by the horizontal sealer moving unit 51 along the respective pressing surfaces 10a, and centered on the YZ plane passing through the center of the conveyance path of the tubular packaging material Wa. As described above, the opening / closing operation can be performed in the X-axis direction.
Further, a cutter mechanism 10b for cutting the horizontal seal portion in the horizontal seal direction is provided at the intermediate portion in the Z-axis direction of the horizontal sealer 10A. For this reason, the cross sections parallel to the ZX plane of the horizontal sealers 10A and 10B are U-shaped or U-shaped and open to the pressing surface 10a side.

In this embodiment, when each pressing surface 10a is heated with a heater etc. and crushes the cylindrical packaging material Wa, the structure which heat-seals the cylindrical packaging material Wa in the crushing direction is employ | adopted.
However, the mechanism for lateral sealing is not limited to heat sealing, and various known lateral sealer configurations can be employed. For example, ultrasonic fusion, pressure-sensitive adhesion, or the like can be employed, and the configurations of the horizontal sealers 10A and 10B can also be adapted to each.

  4 and 5, as shown in FIGS. 4 and 5, the rotation of the drive motor 39 is transmitted to the horizontal sealer brackets 23A and 23B via the slider crank mechanism, and the horizontal sealer brackets 23A and 23B It is configured to slide in the X-axis direction so as to open and close across the center line of the bag-making tube 3.

Lateral sealers 10A and 10B are attached to the side of the bag making tube 3 of the lateral sealer brackets 23A and 23B, respectively.
Further, the shield plate holding brackets 22A and 22B are bolted to the upper surfaces of the horizontal sealer brackets 23A and 23B in the Y-axis direction (Z-axis positive direction side) so that the mounting positions in the X-axis direction can be adjusted. . The mounting positions of the blocking plate holding brackets 22A and 22B are such that the positions of the tip end surfaces of the drop blocking plates 9A and 9B are a certain distance (L ₀ -L ₁ ) from the pressing surfaces 10a and 10a of the horizontal sealers 10A and 10B. It is attached at a position on the tube 3 side.

  The drive motor 39 is a motor that transmits a driving force, and is configured so that the control unit 55 can control the forward / reverse switching of the rotation direction, the rotation amount, and the rotation speed. In this embodiment, for example, a servo motor is employed.

In such a configuration, for example, FIG. 4 shows a state in which the horizontal sealers 10A and 10B are separated.
At this time, when the motor shaft 38 rotates counterclockwise in the drawing, the horizontal sealer 10B attached to the horizontal sealer bracket 23B and the horizontal sealer 10A attached to the horizontal sealer bracket 23A are moved in directions close to each other. The
And if it rotates in the illustrated clockwise direction from the close state in this way, the reverse operation | movement can be performed.
That is, the horizontal sealers 10A and 10B can be opened and closed in the X-axis direction. Along with this, the opening / closing operation of the drop blocking plates 9A and 9B can be performed. Therefore, the horizontal sealer moving part 51 of the present embodiment also serves as the blocking plate moving means of the dropping blocking means that closes the drop blocking plates 9A and 9B and closes the internal passage P.

In the present embodiment, the rotation angle position of the motor shaft 38 (hereinafter, simply referred to as the rotation angle position of the drive motor 39) corresponds to each open state of the horizontal sealers 10A and 10B. It is memorized and can be rotated by appropriately changing the rotation speed between the respective rotation angle positions.
The first rotation angle position corresponds to an open state where the horizontal sealers 10A and 10B and the drop blocking plates 9A and 9B are not in contact with the cylindrical packaging material Wa. For example, the horizontal sealers 10A and 10B are opened by a distance of the state in which the internal passage P of the tubular packaging material Wa is fully opened, in this embodiment, by a distance 2 · L ₀ as the center of the internal passage P. .
The second rotation angle position is a distance where the stoppers 9a of the drop blocking plates 9A and 9B are in contact with each other, that is, an advance position (first advance position) advanced by a distance L ₁ (where L ₁ <L ₀ ). Corresponding to At this time, a gap is formed between the pressing surfaces 10a and 10a of the horizontal sealers 10A and 10B, and the internal passage P is closed by the drop blocking plates 9A and 9B, but is not closed by the pressing surfaces 10a and 10a. .
The third rotational angular position, the transverse sealer 10A, the pressing surface 10a of 10B, 10a are crushed tubular packaging material Wa, the advanced position to advance by a distance _{L 0} of the lateral seal becomes possible (second advanced position) Corresponding to At this time, the blocking plate holding bracket 22A (22B) fixed to the horizontal sealer bracket 23A (23B) moves in the opposing direction along the spring 21 while compressing the spring 21, but the falling blocking plates 9A and 9B are The stoppers 9a and 9b are placed in a stopped state in the X-axis direction.

As shown in FIG. 2, the zipper sealers 11A and 11B are arranged on the negative side and the positive side of the X-axis of the cylindrical packaging material Wa, respectively, and press the cylindrical packaging material Wa from the side to form a cylindrical packaging material. The pressing surfaces 11c, 11c extended in the Y-axis direction in order to stick the zipper member 5 disposed below the lateral seal portion on the inner surface of the material Wa to the cylindrical packaging material Wa are respectively opposed members, The zipper sealer main body 11b and the sealer holding part 11a are comprised.
The zipper sealer body 11b is made of a block-like member having a pressing surface 11c. The length and shape of the pressing surface 11c in the Y-axis direction are the length and shape necessary for pasting according to the form and shape of the zipper member 5.
For example, in the case of a zipper member in which a sealing part is formed on a zipper piece that can be heat sealed, the zipper member 5 is temporarily fixed to the sealing part of the zipper member 5 in the conveying direction upstream and in the lateral sealing direction. It is possible to employ a configuration in which a U-shaped pressing surface 11c (see FIG. 3) that opens downward is provided so as to surround both ends, and a zipper piece is sandwiched between packaging materials W and heat sealed.
However, the mechanism for attaching the zipper member 5 is not limited to heat sealing, and various known zipper sealer configurations can be employed. For example, ultrasonic fusion, pressure-sensitive adhesion, or the like can be employed, and the configuration of the zipper sealer body 11b can also be configured accordingly.

The sealer holding portion 11a extends in the Y-axis direction having a mounting hole 11d on the side surface in the X-axis positive (negative) direction so that the zipper sealer main body 11b and a later-described riser blocking plate 12A (12B) can be selectively replaced. It is the made block member. The mounting hole 11d is formed with, for example, a female screw for performing bolt fastening.
In the present embodiment, in order to make a bag with a zipper, an example in which the zipper sealer main body 11b is attached by a bolt 15 screwed into the attachment hole 11d will be described below.
When the riser blocking plate 12A (12B) is attached to the sealer holding part 11a, the functions of the zipper sealers 11A and 11B are stopped, and the sealer is operated in a mode in which a bag without zipper is made by lateral sealing. .

  The zipper sealers 11A and 11B are opened and closed in the X-axis direction around the YZ plane passing through the center of the transport path by symmetrically moving the respective pressing surfaces 11a along the opposing direction by the zipper sealer moving unit 52. Can be done.

  As shown in FIGS. 4 and 5, the schematic configuration of the zipper sealer moving part 52 is that the rotation of the drive motor 43 is transmitted to the zipper sealer brackets 24A and 24B via the slider crank mechanism, and the zipper sealer brackets 24A and 24B are manufactured. The bag tube 3 is configured to slide in the X-axis direction so as to open and close across the center line of the bag tube 3.

Zipper sealers 11A and 11B are attached to the side of the bag making tube 3 of the zipper sealer brackets 24A and 24B, respectively.
Further, the shield plate holding brackets 25A and 25B are bolted to the zipper sealer brackets 24A and 24B, respectively, so that the mounting positions in the X-axis direction can be adjusted on the lower side in the Y-axis direction (Z-axis negative direction side). The mounting positions of the blocking plate holding brackets 25A and 25B are as follows: the position of the tip surface of the floating blocking plates 12A and 12B is a certain distance (L ₀ -L ₁ ) from the pressing surfaces 11c and 11c of the zipper sealers 11A and 11B. It is attached at a position on the 3 side.

  The drive motor 43 is a motor that transmits a driving force, and is configured so that the control unit 55 can control the forward / reverse switching of the rotation direction, the rotation amount, and the rotation speed. In the present embodiment, a servo motor similar to the drive motor 39 is employed.

In such a configuration, for example, FIG. 4 shows a state where the pressing surfaces 11a of the zipper sealers 11A and 11B are separated from each other.
At this time, when the motor shaft 42 rotates clockwise in the figure, the zipper sealer 11B attached to the zipper sealer bracket 24B and the zipper sealer 11A attached to the zipper sealer bracket 24A are moved in directions close to each other.
And if it rotates in the clockwise direction in the figure from such a close state, the reverse operation can be performed.
That is, the zipper sealers 11A and 11B can be opened and closed in the X-axis direction.

In the present embodiment, the rotation angle position of the motor shaft 42 (hereinafter simply referred to as the rotation angle position of the drive motor 43) is stored in the control unit 55 in advance corresponding to each open state of the zipper sealers 11A and 11B. The rotation speed can be appropriately changed between the respective rotation angle positions.
The first rotation angle position corresponds to an open state in which the zipper sealers 11A and 11B and the rising block plates 12A and 12B are not in contact with the tubular packaging material Wa. For example, the zipper sealers 11A and 11B are opened by a distance of the state in which the internal passage P of the tubular packaging material Wa is fully opened, that is, the distance 2 · L ₀ as the center of the internal passage P in this embodiment.
Second rotation angle position, Mai up blocking plate 12A to be described later, the distance the stopper 9a each other 12B abuts, i.e., corresponding to the distance L ₁ entering the advanced position (third advanced position). At this time, a gap is formed between the pressing surfaces 11a and 11a of the zipper sealers 11A and 11B, and the internal passage P is closed by the rising and blocking plates 12A and 12B, but is not closed by the pressing surfaces 11a and 11a.
The third rotational angular position, corresponding to Jippashira 11A, 11B of the pressing surface 11a, 11a is crushed tubular packaging material Wa, the advanced position to advance by a distance _{L 0} which becomes possible Jippashiru (Fourth advanced position) To do.

The rising blocking plates 12A and 12B are inverted from the configuration of the falling blocking plates 9A and 9B in the XY plane, are provided below the zipper sealers 11A and 11B, and are supported in the horizontal direction by the guide shaft 20 and the spring 21. Is. However, the guide shaft 20 and the spring 21 have the same configuration as those of the shield plate holding brackets 22A and 22B, and the shield plate holding bracket is different in that the mounting position is the lower surface of the zipper sealer brackets 24A and 24B. It is held by 25A and 25B.
The blocking plate holding brackets 25A and 25B are detachably attached to the zipper sealer brackets 24A and 24B by a fixing screw 26.
Similarly to the drop blocking plates 9A and 9B, stoppers 9a and 9b with which the respective tips come into contact are provided at both ends in the Y-axis direction of the rising blocking plates 12A and 12B, respectively, in order to regulate the positions when they are advanced. It has been. The advancement positions of the soaking plates 12A and 12B are set at positions where the respective end faces are aligned with the center line of the internal passage P or more preferably slightly exceeded.
In this embodiment, the positions are slightly beyond, and each is arranged in a stepped manner in the Z-axis direction, so that the cylindrical packaging material Wa crushed at the respective front end surfaces at the time of advancement is zigzag in a front view. It is bent and the internal passage P is closed.

With such a configuration, when the zipper sealer bracket 24A (24B) is moved to the second rotation angle position of the drive motor 43 of the zipper sealer moving part 52, the blocking plate fixed to the zipper sealer bracket 24A (24B). The holding bracket 25 </ b> A (25 </ b> B) moves the soaking plate 12 </ b> A (12 </ b> B) in the X-axis positive (negative) direction via the spring 21.
Therefore, the zipper sealer moving part 52 of the present embodiment also serves as the blocking plate moving means of the rising blocking means that closes the rising blocking plates 12A and 12B and closes the internal passage P.

  When the zipper sealer moving part 52 is moved to the third rotation angle position of the drive motor 43, the blocking plate holding bracket 25A (25B) fixed to the zipper sealer bracket 24A (24B) compresses the spring 21. However, although it moves in the opposite direction along the spring 21, the soaking plate 12A (12B) is placed in a state of being stopped in the X-axis direction by the action of the stoppers 9a and 9b.

As shown in FIG. 2, auxiliary air vents 13A and 13B fixed to the shield plate holding brackets 25A and 25B via auxiliary air vent support brackets 27A and 27B are provided below the soaring barrier plates 12A and 12B. Has been placed.
The auxiliary air vents 13A and 13B are air vent press plates 14A and 14B, which will be described later, and perform the air vent operation when filling the package in the tubular packaging material Wa. This suppresses the expansion of the cylindrical packaging material Wa in the X-axis direction.
In the present embodiment, coil springs 28 and 28 are used that extend a distance slightly longer than the width of the cylindrical packaging material Wa in the Y-axis direction and are stretched in parallel in the Z-axis direction. The positions of the coil springs 28, 28 in the X-axis direction are such that when the zipper sealer brackets 24A, 24B are moved to positions corresponding to the third rotation angle position of the zipper sealer moving part 52, the side surfaces of the respective coil springs 28. Is set to a position in contact with or close to the tubular packaging material Wa.

The air bleeding press plates 14A and 14B are members that evacuate the cylindrical packaging material Wa by sandwiching the cylindrical packaging material Wa in the X-axis direction on the downstream side in the transport direction of the auxiliary air bleeding portions 13A and 13B. It is moved in the X-axis direction by the pressing plate moving part 54.
The air bleeding press plates 14A and 14B each have a size capable of substantially covering the tubular packaging material Wa when the tubular packaging material Wa is pressed in the X-axis direction to a predetermined thickness in the YZ plane, Each pressing surface 14a pressed by the cylindrical packaging material Wa is arranged in a state in which the facing interval increases from the upstream side in the transport direction (Z-axis positive direction side) to the downstream side (negative direction), and performs the pressing operation. It is what I do.
In the present embodiment, as the air bleeding press plate 14A (14B), a tapered plate material whose thickness becomes thinner from the positive Z-axis direction toward the negative side in the ZX plane is adopted, and one surface thereof is used. The pressure plate mounting bracket 29A (29B) is vertically supported, and the pressing plate mounting bracket 29A (29B) is held by the pressing plate moving portion 54 that moves in the X-axis direction, thereby moving the pressing surface 14a in parallel. Is adopted.

As shown in FIGS. 6 to 8, the schematic configuration of the pressing plate moving unit 54 includes a pressing bracket 30A, slide shafts 48 and 48, a connecting bracket 60, a crank arm 61A, a pressing bracket 30B, a crank arm 61B, and a drive motor 64. Become.
The pressing bracket 30A is a block-like member extending in the Y-axis direction, and slide shafts 48 and 48 extending in parallel with the X-axis positive direction are fixed to both ends in the longitudinal direction (Y-axis direction).
As shown in FIG. 6, each slide shaft 48 is supported so as to be movable in the X-axis direction by bearings of two slide shaft support portions 49a and 49b provided on the support brackets 49L and 49R, respectively.
A pressing plate mounting bracket 29A is attached to the upper surface side (Z-axis positive direction side) of the intermediate portion in the Y-axis direction of the pressing bracket 30A.
The connecting bracket 60 is a block-like member that is approximately the same length as the pressing bracket 30A and extends in the Y-axis direction, and both end portions in the Y-axis direction are fixed to the slide shafts 48 and 48, respectively. A joint portion 60a for rotatably fixing a crank arm 61A for transmitting a driving force from a driving motor 64 described later is provided on the X axis negative direction side of the intermediate portion in the Y axis direction.
As described above, the pressing bracket 30A, the slide shafts 48 and 48, and the connecting bracket 60 are assembled in a lattice shape in plan view, and can be moved in the X-axis direction by the driving force transmitted by the crank arm 61A. Yes.

The pressing bracket 30B is a block-like member that extends in the Y-axis direction, and is provided with slider portions 30b that are slidably connected to the slide shafts 48 and 48 at both ends in the longitudinal direction (Y-axis direction). Each is connected to the slide shaft 48 between the slide shaft support portions 49a and 49b.
A pressing plate mounting bracket 29B is attached to the upper surface side of the intermediate portion in the Y-axis direction of the pressing bracket 30B.
Similarly, on the side surface on the X-axis negative direction side, there is provided a joint portion 30a for rotatably fixing a crank arm 61B that transmits a driving force from a driving motor 64 described later. The joint part 30a and the joint part 60a are provided at positions substantially opposite to each other.

The drive motor 64 is a motor that transmits driving force to the crank arms 61A and 61B, and is configured such that the control unit 55 can control the forward / reverse switching of the rotation direction, the rotation amount, and the rotation speed. is there. In the present embodiment, a servo motor similar to the drive motor 39 is employed. And it is being fixed to the lower surface side of the motor support bracket 65 passed between support brackets 49L and 49R.
The motor shaft 63 that is an output shaft is provided along the Z axis, and a rotating arm 62 is fixed to the tip thereof.
Crank arms 61A and 61B are coupled to the rotational arm 62 at both ends in the radial direction of the rotation, for example, by rotational joints such as pin coupling.

In such a configuration, for example, FIG. 6 shows a state where the pressing surfaces 14a of the air bleeding pressing plates 14A and 14B are spaced apart to the maximum.
At this time, when the motor shaft 63 rotates counterclockwise in the drawing, the ends of the crank arms 61A and 61B connected to the connecting bracket 60 and the pressing bracket 30B are moved symmetrically in the direction away from each other in the X-axis direction. The For this reason, the air bleeding pressure plate 14B attached to the pressure bracket 30B via the pressure plate mounting bracket 29B and the air bleeding attached to the pressure bracket 30A at a position facing the connecting bracket 60 via the pressure plate mounting bracket 29A. The pressing plate 14A is moved in a direction closer to each other.
And if it rotates in the clockwise direction in the figure from such a close state, the reverse operation can be performed.
That is, the opening / closing operation in the X-axis direction of the air bleeding press plates 14A and 14B can be performed.

In this embodiment, the rotation angle position of the rotation arm 62 and the motor shaft 63 (hereinafter simply referred to as the rotation angle position of the drive motor 64) corresponding to the facing distance between the air bleeding press plates 14A and 14B. Is stored in advance in the control unit 55, and can be rotated by appropriately changing the rotation speed between the respective rotation angle positions.
A 1st rotation angle position respond | corresponds to the open state for making the cylindrical packaging material Wa which the to-be-packaged item is filling pass in a conveyance direction, without making the press surface 14a touch.
The second rotation angle position corresponds to a facing interval for releasing the air from the cylindrical packaging material Wa filled with the article to be packed to have a constant thickness.

  The discharge guide 31 is a guide member provided on the downstream side in the conveying direction of the air bleed press plates 14A and 14B. After filling the package, the upper end is horizontally sealed by the horizontal sealers 10A and 10B and cut by the cutter mechanism 10b. This is a guide member for discharging the packaging bag Wb (see FIG. 1) that is formed vertically and drops downward to an appropriate position where a transport belt (not shown) is located. For example, it is possible to adopt a configuration in which a guide surface having a U-shaped cross section and a U-shaped bottom surface is inclined obliquely.

Next, the operation of the vertical bag making filling and packaging machine 100 will be described focusing on the operation during horizontal sealing.
FIG. 9 is a timing chart for explaining the operation of the vertical bag filling and packaging machine according to the embodiment of the present invention.

The general operation of the vertical bag making filling and packaging machine 100 is as follows.
First, as shown in FIG. 1, the conveyance roller 2 is driven, and the packaging material W is unwound from the film roll 1 by a certain length and is conveyed intermittently. The packaging material W reaches the lower side of the zipper temporary fixing portion 4 in a state of being spread in a substantially horizontal direction. At this time, the zipper temporary fixing portion 4 arranges the zipper member 5 on the packaging material W and temporarily fixes it on the packaging material W. The temporary fastening position of the zipper member 5 is a position slightly downstream in the transport direction from the planned position where the horizontal seal is formed.

The packaging material W to which the zipper member 5 is temporarily fixed is conveyed to the former part 3a.
In the former part 3a, the packaging material W is overlapped with the end portions in the width direction facing each other and shaped into a substantially cylindrical shape along the outer periphery of the bag-making tube 3, thereby forming the tubular packaging material Wa.
The tubular packaging material Wa is intermittently fed out in the negative Z-axis direction by the feeding belt 6 on the bag-making tube 3 by the length of the packaging bag Wb.
This operation timing is synchronized with the vertical seal operation of the vertical seal portion 7 and the opening / closing operation of each sealer by the horizontal sealer moving portion 51 and the zipper sealer moving portion 52.
That is, when the feeding is stopped, the end portion of the cylindrical packaging material Wa that is overlapped in the circumferential direction is vertically sealed by the vertical seal portion 7, and the shape of the cylindrical packaging material Wa on the upstream side in the transport direction is fixed.
Moreover, the closing operation of the drop blocking plates 9A and 9B, the horizontal sealers 10A and 10B, the zipper sealers 11A and 11B, and the rising blocking plates 12A and 12B is performed on the downstream side in the transport direction, and when each is opened, the feeding operation is performed. Done. And the filling process of the package is performed from the hopper 8 during the feeding operation.

Next, detailed operation timing will be described with reference to FIG. FIG. 9 shows an operation for two cycles, where T is a cycle in which one packaging bag Wb is made. Time t ₂₄ from the time t ₀ as described in the portion of the 0~T is to match the index of the order and temporal order. The same operation is repeated between times T and 2 · T.
In FIG. 9, curves 200 to 206 respectively indicate a dropping operation of the article to be packaged, a transporting operation of the tubular packaging material Wa, an opening / closing operation of the horizontal sealers 10A and 10B, an operation of the cutter mechanism 10b, and an opening and closing operation of the zipper sealers 11A and 11B. The timings of opening and closing the air bleeding press plates 14A and 14B and the operation of the vertical seal portion 7 are shown.

When the filling process in the previous process is completed, at time 0, the drive motor 39 is rotated from the third rotation angle position toward the first rotation angle position, and the transverse sealer moving unit 51 The closed side sealers 10A and 10B are gradually opened (see curve 202). At the same time, the feeding of the feeding belt 6 is gradually started (see the curve 201).
The zipper sealers 11A and 11B and the air bleeding press plates 14A and 14B have started the opening operation before that (see curves 204 and 205). Further, the cutter mechanism 10b is started saving to transverse sealer 10A in retreat at time _{t 0} is completed (see curve 203).
Then, at time t _1, the drive motor 64 is rotated to its first rotation angle position, the pressing plate moving part 54 air vent pressing plate 14A, 14B is moved to the position of the open state (see curve 205) .
At time _{t 2, the} drive motor 39, 43 is rotated to rotate at the first rotational angular position of each accordingly, the lateral sealer moving section 51, the Jippashira moving unit 52, the horizontal sealer 10A, 10B, The zipper sealers 11A and 11B move to the open positions. In the present embodiment, between the pressing surface 10a, and the pressing surface 11a to each other, they are separated by a distance 2 · _{L 0.}
At this time, the drop blocking plates 9A and 9B and the rising blocking plates 12A and 12B moved by the horizontal sealer moving unit 51 and the zipper sealer moving unit 52 are simultaneously opened.
Thus, in a state where the internal passage P is formed in the cylindrical packaging material Wa on the lower side of the bag-making tube 3, the bag can be freely conveyed. Therefore, the articles to be packaged that have been dropped in the immediately preceding manufacturing cycle start to fall downward and are gradually filled into the cylindrical packaging material Wa.

On the other hand, as shown in curve 201, from the time t _3, feed the tubular packaging material Wa at a constant speed by a feeding belt 6. Then, the deceleration at the time _{t 5,} to stop the feeding at the time _{t 9.} During this time (time 0 to t ₉ ), the length required for forming one packaging bag Wb is set.
Also, in order to perform vertical sealing after the time t ₉ the tubular packaging material Wa is stopped, from time t ₈ drives the vertical sealing portion 7, between times t ₁₁ ~t _17, to close the longitudinal sealing portion 7 A vertical sealing operation is performed (see curve 206).

Further, as shown in curve 200, during the period from the time u ₁ to time u _2, was charged with the packed material from the hopper 8, to put the package item of the quantities packed into one packaging bag Wb.
These articles to be packaged fall in the bag making tube 3 and are gradually filled into the cylindrical packaging material Wa whose bottom is laterally sealed through the internal passage P. For this reason, the article to be packaged introduced at time u _{1 to} u ₂ falls while diffusing in the internal passage P, and reaches below the bag-making tube 3 during time t ₁₄ to (t ₁₀ + T). . Here, the time u ₁ and the time u ₂ take into consideration the fall time of the article to be packaged, and the time t ₁₄ is after the drop blocking plates 9A and 9B are closed, and (t ₁₀ + T) is the next cycle. It is set so that the drop blocking plates 9A and 9B are before closing.

As shown in curve 202, at time _t 4 _{~t 12,} rotates the drive motor 39 from the first rotation angle position to a second rotational angle position, respectively opposite directions fall blocking plate 9A, 9B and is advanced by a distance L ₁ in, it closes the internal passage P. Thus, the time t ₁₂ after, the packaged articles falling from above, fall blocking plate 9A, is blocked by 9B, it is accumulated in the passage P of the upper.
On the other hand, as shown by curve 205, at time _t 6 _{~t 15,} the drive motor 64 to rotate from its first rotation angle position to the second rotation angle position, the air vent pressing plate 14A, and 14B Gradually moving in the opposite direction, the article to be packaged presses the cylindrical packaging material Wa being filled.
In the present embodiment, the control unit 55 causes the pressing plate moving unit 54 to be between the times t ₆ and t ₁₅ and until the time v ₂ when the pressing surfaces 14a and 14a start to contact the tubular packaging material Wa. Control is performed so that the vehicle moves at a constant speed or at a constant speed until time v ₁ and is decelerated from time v ₁ to time t ₁₅ .
Therefore, from time v _2, tubular packaging material Wa is, the side surfaces of the X-axis direction, along the inclination of the pressing surface 14a, will be pressed to be packaged is moved from the upper to the lower side, a predetermined The thickness of the packaging bag Wb. In this process, the article to be packaged in the cylindrical packaging material Wa moves downward by the pressing surface 14a, and air is vented from the cylindrical packaging material Wa. At this time, the pressing surface 14a depresses while being decelerated, so that the rising of the filling material in the tubular packaging material Wa can be reduced as compared with the case where the pressing surface 14a is pressed at an acceleration or constant speed.
At time t _12, fall blocking plate 9A, but internal passages P is closed by 9B, fall blocking plate 9A, since 9B is provided staggered in the Z axis direction, the tubular packaging material Wa is the front view zigzag The object to be packaged does not pass and air can pass through.

Then, as shown by curve 204, at time _t 7 _{~t 13,} the drive motor 43 to rotate from its first rotation angle position to a second rotational angle position, soars blocking plate 12A, 12B, respectively in opposite directions by a distance L ₁ is advanced to close the internal passage P. Thus, the time _{t 13} after, to be packaged soar from below the tubular packaging material in the Wa are whirled up blocking plate 12A, is blocked by 12B. At this time, the air pushed upward is allowed to pass through, like the drop blocking plates 9A and 9B.
In this process, the air pushed out from the downstream side causes the cylindrical packaging material Wa in the vicinity of the risen blocking plates 12A and 12B to swell. Since the air vents 13A and 13B are advanced in the opposing direction, the cylindrical packaging material Wa is sandwiched from the X-axis direction by the two coil springs 28, and the air is gradually vented by the elastic force of the coil springs 28. Go.

As described above, in the present embodiment, the time difference Δt = t ₁₃ −t ₁₂ is provided at the timing when the drop blocking plates 9A and 9B and the rising blocking plates 12A and 12B close the internal passage P, respectively. The time difference Δt at time t _12, present in the space until the fall blocking plate 9A, the blocking plate 12A whirled up from the blocking position 8 above the cut-off position) by 9B, blocking position by 12B (blocking position of the lower side) The time is set longer than the time required for the article to be packaged to fall to the lower side of the blocking position by the rising blocking plates 12A and 12B. Thus, the time t ₁₃ after, the packaged articles are not remaining in the passage P between the upper and lower shut-off position, and does not penetrate from the upstream and downstream sides state is formed.

In the present embodiment, Jippashira moving unit 52, the time t ₁₃ after, as it moves, until time t _16, to reach the drive motor 43 to the third rotational angular position continues to rotate (see curve 204) . At this time, Jippashira 11A, 11B is to advance from the position of the respective time _{t 7} by a distance _{L 0,} and crushed tubular packaging material Wa, it stopped until time _{t 21} in this position. Then, the attaching operation of the zipper member 5 is performed.
During this time, the blocking plate holding bracket 25A, 25B is also advanced in the opposite direction, continues to press the spring 21, respectively, the blocking plate 12A whirled stopper 9a, by 9b, the position of the 12B, the position of the time _{t 13} is maintained. The horizontal sealer moving unit 51 is stopped to the time _{t 16} (see curve 202). The pressing surfaces 14a, 14a are stopped at time _{t 16} the previous time _{t 15.}
Therefore, air bleeding the pressing plate 14A until time _t 13 _{~t 15,} even 14B continues to be pressed, it is possible to go missing air upstream. In addition, at time _{t 16,} the pressing surface 14a, the pressing of 14a is in the state of dance up of the cause does not occur. Accordingly, it is possible to prevent the packaged items from rising and entering the seal portion and being bitten at the time of zipper sealing.

The horizontal sealer moving unit 51 from the time _{t 16,} to start the rotation of the driving motor 39, to reach up to the third rotational angular position by turning to the time _{t 18} (see curve 202). At this time, the horizontal sealer 10A, 10B is to advance from the position of the respective time _{t 4} by a distance _{L 0,} and crushed tubular packaging material Wa, stopped until time _{t 24} in this position. Then, a horizontal sealing operation is performed.
During this time, the blocking plate holding bracket 22A, 22B is also advanced in the opposite direction, but each continues to press the spring 21, the stopper 9a, fall blocking plate 9A by 9b, the position of 9B, the position of the time _{t 12} is maintained. Therefore, when the air sandwiched between the upper and lower blocking positions is pressed by the horizontal sealers 10A and 10B and the zipper sealers 11A and 11B, they can escape upstream until the horizontal seal is completed. It can be done smoothly.

After the transverse seal is completed, the cutting operation of the cutter mechanism 10b is performed at time t _23, the packaging bag Wb are separated. Further, since the zipper sealer moving unit 52 and the pressing plate moving unit 54 start the opening operation from time t ₂₁ and t ₁₉ , respectively, the separated packaging bag Wb is released from the sandwiching in the left-right direction and directed toward the discharge guide 31. Fall.
This completes the manufacturing cycle of one packaging bag Wb. By repeating the above, a plurality of packaging bags Wb are continuously made.

As described above, according to the vertical bag making and packaging machine 100 of the present embodiment, the drop blocking plates 9A and 9B, the rising blocking plates 12A, respectively, on the upstream side and the downstream side of the horizontal sealers 10A and 10B and the zipper sealers 11A and 11B, 12B is provided, the inner passage P is closed by the former, and the inner passage P is closed by the latter after a predetermined time Δt, so that the package is not sandwiched between the upper and lower blocking positions, A zipper seal can be performed. For this reason, it is possible to reduce the occurrence of defects in the lateral seal and the zipper seal due to the object to be packaged being bitten.
At that time, since the drop blocking plates 9A and 9B and the rising blocking plates 12A and 12B are arranged with their respective tip ends shifted in the transport direction (Z-axis direction), the cylindrical packaging material Wa The internal passage P is closed without being crushed by the tip of the plate. Therefore, it is possible to prevent the article to be packaged from being bitten between the tip portions and pulverized, or from damaging the packaging material W at the tip portion.
In addition, since the degree of closure can be changed by adjusting the advance position, it is easy to adjust the degree of closure so that an article to be packaged does not circulate and a gas such as air circulates sufficiently.
Furthermore, since the horizontal seal is performed after the zipper seal, the air can be reliably vented between the zipper seal portion and the horizontal seal portion.

In the above description, an example in which a bag with a zipper is made has been described. However, the vertical bag filling and packaging machine 100 can easily cope with bag making of a bag without a zipper.
FIG. 10 is a partial front view for explaining the replacement of the blocking plate in order to make a bag without a zipper.
That is, in the above embodiment, the fixing screw 26 is removed, the shielding plate holding bracket 25A (25B) is removed, and the rising shielding plate 12A (12B) is attached to the sealer holding portion 11a instead of the zipper sealer body 11b. Thereby, even when making a bag without a zipper, the zipper sealer moving part 52 can be also used as the blocking plate moving means of the rising blocking means.

  In the above description, the example in which the air bleeding unit is provided has been described. However, when the air bleeding unit is not required, the air bleeding unit may not be provided.

In the above description, an example in which a zipper sealer and a zipper sealer moving means are provided has been described. However, when only a bag without a zipper is made, the zipper sealer and the zipper sealer moving means may be omitted.
In such a case, or even when the zipper sealer is provided, the blocking plate is replaced and the air venting means is provided, and the timing for stopping the air venting means is the timing before the lateral sealer stops. Try to stop it.

Further, in the above description, the distance between the horizontal sealer and the zipper sealer in the open state is the same 2 · L ₀ , and the distance in the open state between the shut-off plates of the drop-off means and the fall-off means is the same. In the case of 2 · L _l , this is an example, and each distance is set to a different distance if the time difference required for the closing timing between each sealer and each shut-off means can be set. Also good. In addition, the distance can be appropriately set in consideration of the thickness of the zipper member, the position of the blocking plate, the shape of the sealer, and the like.

In the above description, the horizontal sealer moving means, the zipper sealer moving means, and the blocking plate moving means are described as an example in which a mechanism that converts the rotation of the drive motor into an opening / closing motion in the opposite direction by a two-way crank mechanism is described. did. According to such a mechanism, since a symmetrical opening / closing operation can be realized with one drive motor, a simple configuration can be achieved.
However, the lateral sealer moving means, the zipper sealer moving means, and the blocking plate moving means are not limited to such moving means, and any method can be used as long as a pair of members can be opened and closed in the facing direction. A simple mechanism may be adopted. For example, a mechanism that drives each pair member by a linear motion mechanism such as a linear motor or an actuator may be employed.

  Further, in the above description, the horizontal sealer moving means and the zipper sealer moving means are described as examples in which the drop blocking means and the blocking plate moving means of the soaking block means are used respectively. At least one of the blocking plate moving means may be configured by a dedicated moving mechanism.

  In the above description, the drop blocking means and the rise blocking means are described as an example of the blocking plate and the blocking plate moving means. However, other mechanisms may be used as long as the internal passage can be closed. For example, instead of the blocking plate, a mechanism that forms a zigzag-shaped bend may be adopted by a configuration in which cylinders are alternately combined, a configuration in which a concavo-convex block in which a concavo-convex portion is fitted, or the like is advanced and retracted.

  In the above description, the advance position of the zipper sealer moving means can be switched between the third advance position and the fourth advance position in two stages, but the fourth advance position does not stop at the third advance position. However, it may be temporarily stopped at the third advance position.

Further, in the above description, the packing material filled with the filling material is sandwiched and pressed from the side by a pair of pressing plates opposed so that the facing distance increases from the upstream side to the downstream side in the transport direction. In the example provided with the air venting means characterized by the above, such air venting means include the presence / absence of a time difference between the operation timings of the fall shut-off means and the rise shut-off means, and the presence / absence of these means themselves. Regardless, even if it is provided in a vertical bag making filling and packaging machine, an excellent effect can be obtained.
In the prior art described in Patent Document 1, air is vented by pressing from the side so as to make the thickness of the cylindrical packaging material constant, so that the object to be filled and air are simultaneously centered from the upstream side to the downstream side. As a result, the upward flow is generated at the center of the pressure at the same time, and there is a problem that the material is ejected vigorously above the object to be filled.
On the other hand, if the air venting means described above is employed, the filling material gradually moves the filling material downward from the upstream side to the downstream side, and gradually collects air at the center of pressing. I can go. Therefore, the rising of the filling material can be reduced as compared with the prior art. Therefore, there is an effect that it is possible to reduce defects that the filling amount of the filling material varies due to soaring or the filling material is bitten into the lateral seal portion.

1 is a schematic perspective view showing a schematic configuration of a vertical bag making filling and packaging machine according to an embodiment of the present invention. It is a front view which shows schematic structure of the principal part of the vertical bag making filling packaging machine which concerns on embodiment of this invention. It is a typical side view explaining arrangement | positioning of the main member in the principal part of the vertical bag making filling packaging machine which concerns on embodiment of this invention. It is a fragmentary sectional view of the front view of the vertical bag making filling packaging machine which concerns on embodiment of this invention. It is a top view of the vertical bag making filling packaging machine concerning the embodiment of the present invention. It is a top view which shows schematic structure of the air bleeding means of the vertical bag making filling packaging machine which concerns on embodiment of this invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a timing chart for demonstrating operation | movement of the vertical bag making filling packaging machine which concerns on embodiment of this invention. It is a partial front view explaining replacement of a shielding board in order to make a bag without a zipper.

Explanation of symbols

3 Bag-making tube 5 Zipper member 6 Feeding belts 9A, 9B Fall blocking plate (blocking plate for drop blocking means)
9a, 9b Stopper 10A, 10B Horizontal sealer 11A, 11B Zipper sealer 11a Sealer holding part 11b Zipper sealer body 11c Mounting hole 12A, 12B Lifting blocking plate (blocking plate for rising blocking means)
13A, 13B Auxiliary air vents 14A, 14B Air venting pressure plate (air venting means)
39, 43, 64 Drive motor 51 Lateral sealer moving part (lateral sealer moving means)
52 Zipper sealer moving part (Zipper sealer moving means)
54 Pressing plate moving part 55 Control part (control means)
100 Vertical bag making filling and packaging machine P Internal passage W Packaging material Wa Cylindrical packaging material (cylindrical packaging material)
Wb packaging bag

Claims (7)

It is a vertical bag filling and packaging machine that conveys a cylindrical packaging material from the top to the bottom, drops the filling material into the inside and fills it, horizontally seals it to make a bag,
A drop blocking means for closing an internal passage of the cylindrical packaging material and blocking a falling filling material;
A pair of horizontal sealers that squeeze the cylindrical packaging material from the sides facing each other and seal along the direction intersecting the conveying direction;
Horizontal sealer moving means for moving the pair of horizontal sealers back and forth with respect to the cylindrical packaging material along the opposing direction;
Bounce blocking means for closing the internal passage of the cylindrical packaging material and blocking the filling material that rises from the downstream side,
Control means for controlling each operation of the fall shut-off means, the horizontal sealer, the horizontal sealer moving means, and the flying shut-off means,
The drop blocking means, the horizontal sealer, and the bounce blocking means are arranged in this order from the upstream side along the transport direction,
The control means closes the internal passage of the cylindrical packaging material by the fall shut-off means, and further closes the internal passage of the cylindrical packaging material by the lift-off shielding means after a predetermined time, and then A vertical bag making filling and packaging machine characterized in that horizontal sealing is performed at At least one of the drop blocking means and the bounce blocking means is
A pair of blocking plates arranged with the cylindrical packaging material sandwiched along the direction intersecting the transport direction and shifted in the transport direction with respect to each other,
2. The vertical bag making filling and packaging machine according to claim 1, further comprising blocking plate moving means for moving the pair of blocking plates back and forth in opposite directions. The drop blocking means comprises the pair of blocking plates;
By providing the pair of blocking plates on the pair of horizontal sealers, the horizontal sealer moving means also serves as the blocking plate moving means of the drop blocking means,
The lateral sealer moving means is
The position at the time of advancement of the horizontal sealer,
A first advancing position for closing the internal passage of the packaging material with the pair of blocking plates of the drop blocking means;
The vertical type according to claim 2, wherein the vertical seal can be switched to at least two stages of a second advancing position in which the cylindrical packaging material is crushed by the horizontal sealer so as to be capable of horizontal sealing. Bag making filling and packaging machine. The rising block means includes the pair of blocking plates;
A pair of zipper sealers for attaching a zipper member disposed on the packaging material to the packaging material between the lateral sealer and the soaking blocker, and the pair of zipper sealers with respect to the cylindrical packaging material Zipper sealer moving means for advancing and retracting each other along the opposing direction,
By providing the zipper sealer moving means with a pair of blocking plates for the rising blocking means, the double blocking block also serves as the blocking plate moving means for the rising blocking means,
The mounting position of the pair of blocking plates with respect to the zipper sealer moving means can be selectively switched between a position of the pair of zipper sealers and a position downstream of the pair of zipper sealers in the transport direction. ,
And the zipper sealer moving means determines the position when the zipper sealer is advanced,
A third advancing position for closing the internal passage of the packaging material with the pair of blocking plates of the rising blocking means;
The said zipper sealer can crush the said cylindrical packaging material, It can switch to at least 2 steps | paragraphs with the 4th advancing position which makes the said zipper member a state which can be affixed. Vertical bag filling and packing machine. On the downstream side in the transport direction of the soaking block means,
A pair of pressing plates are provided so as to be opposed to each other in such a manner that the facing interval increases from the upstream side to the downstream side in the transport direction, and the packing material filled with the filling material is sandwiched from the side. The vertical bag making filling and packaging machine according to any one of claims 1 to 4, further comprising an air venting means for a filling portion in the packaging material. The pair of pressing plates is
After the internal passage is closed by the lift blocking means, the zipper sealer is moved to start pressing the packaging material filled with the filling material, decelerated during pressing, and the zipper sealer is moved to the fourth advanced position. The vertical bag making filling and packaging machine according to claim 5, wherein the vertical bag making filling and packaging machine is controlled to stop before reaching. On the downstream side in the transport direction of the soaking block means,
A pair of pressing plates are provided so as to be opposed to each other in such a manner that the facing interval increases from the upstream side to the downstream side in the transport direction, and the packing material filled with the filling material is sandwiched from the side. In addition, it comprises an air venting means for the filling part in the packaging material,
The pair of pressing plates is
After the internal passage is closed by the soaking block means, the packaging material filled with the filling material is moved so as to start pressing, and decelerated during pressing, and the horizontal sealer closes the internal passage. It is controlled to stop before, The vertical bag making filling packaging machine in any one of Claims 1-3 characterized by the above-mentioned.

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