JP6605384B2 - Vertical packaging machine and packaging method - Google Patents

Description

  The present invention relates to a packaging machine for adhering a packaging material and filling an object to be packaged in the packaging material.

  Conventionally, a vertical pillow packaging machine as shown in FIG. 19 is generally used as an apparatus for packaging an article to be packaged in a pillow-shaped package formed of a plastic film (see Patent Document 1). In the vertical pillow packaging machine shown in FIG. 19, the belt-shaped packaging material Fw is wound around the cylindrical bag-making tube 101 and bent, and viewed from the supply side of the belt-shaped packaging material Fw, the bag-making tube 101 faces the shaft. By using the vertical sealer 104 provided on the side, both side edges in the width direction of the strip-shaped packaging material Fw are bonded to form the cylindrical packaging material Ft. Further, the lower end portion of the cylindrical packaging material Ft is bonded by the horizontal sealer 105. The tubular packaging material Ft is filled with an article to be packaged with the lateral seal region provided at the lower end as the bottom. With the cylindrical packaging material Ft filled with the article to be packaged, the tubular packaging material Ft is bonded between the packaged article and the bag-making cylinder 101 in the lateral seal region, and cut with a cutter. As shown, a pillow-shaped package Fp can be formed. The pillow-shaped package Fp thus formed is transported to a downstream process such as inspection or boxing by a transport device such as a conveyor.

  In the vertical pillow packaging machine as shown in FIG. 19, the bag-making cylinder 101 that forms the pillow-shaped packaging body Fp is arranged in the vertical direction, so that it is compared with the horizontal pillow packaging machine in which the bag-making device is installed in the horizontal direction. , Space can be saved. Furthermore, since the article to be packaged introduced into the cylindrical packaging material Ft naturally falls to the bottom, it is not necessary to position the article to be packaged, and the packaging operation can be speeded up.

JP 2011-162239 A

  However, in order to fill the packaging material into the cylindrical packaging material Ft, the vertical packaging machine as described above needs to drop the packaging material from above the bag-making cylinder 101 to the bottom of the cylindrical packaging material Ft. There is. For this reason, there is a possibility that the quality may be deteriorated due to a crack or deformation on the surface of the object to be packaged due to an impact at the time of dropping.

  The present invention has been made in view of the above problems. One object of the present invention is to provide a packaging machine capable of maintaining the quality of an article to be packaged.

Means for Solving the Problems and Effects of the Invention

In order to solve the above-described problems, the first vertical packaging machine of the present invention has a cylindrical shape provided in the vertical direction, and guides the cylindrical packaging material downward along its outer surface. Meanwhile, a vertical packaging machine comprising a bag-making cylinder for filling an article to be packaged inserted from above the cylinder into a cylindrical packaging material whose lower end is closed, and outside the bag-making cylinder. Provided on the side of the intermediate portion is a first narrowing means for narrowing the cylindrical packaging material from the outside to the inside to form a narrowed portion, and the bag-making cylinder has a first narrowing means in the middle of the side surface. An opening that passes from the outside toward the inside is provided, and the cylindrical packaging material is sandwiched between the bag-making cylinder below the opening of the bag-making cylinder, and the cylindrical packaging material is sent downward. A lower feeding portion having a portion, and the lower feeding portion can loosen the cylindrical packaging material in the middle portion of the bag-making cylinder by controlling the rotation of the rotating portion. Provided on, in contact with the stenosis inside the bag-making cylinder is to be packaged, characterized by comprising as to slow down or pause.

The above vertical wrapping machine narrows the cylindrical packaging material at the opening of the bag-making cylinder, so that when the packaging object falls inside the bag-making cylinder, the packaging object is narrowed by the cylindrical packaging material. By contacting the part and decelerating or temporarily stopping, the impact at the time of dropping can be reduced, and the possibility of quality deterioration due to breakage of the article to be packaged can be reduced. Further, since the packaged article is decelerated through the cylindrical packaging material, the surface deposits and the like do not move between the packaged article and the first constriction means, and the packaging is performed hygienically. It can be carried out.
According to the above vertical packaging machine, before the cylindrical packaging material is narrowed by the first narrowing means, the cylindrical packaging material is loosened by feeding it upward in the packaging material feeding section. In addition, a margin for constriction can be provided by the first constriction portion.

  Further, in the second vertical packaging machine of the present invention, the first constricting means includes a pressing portion that contacts and presses the cylindrical packaging material, and a direction in which the pressing portion moves away from the direction approaching the cylindrical packaging material. And a power unit to be moved to each other.

  The above vertical wrapping machine can decelerate the package by narrowing the packaging material by the pressing portion.

  Further, in the third vertical wrapping machine of the present invention, the first narrowing means is configured such that when the article to be packaged passes through the inside of the bag-making cylinder downward, the article to be packaged faces outward together with the cylindrical packaging material. Extruded and provided so as to narrow the packaging material again after passing through the package.

  In the above vertical packaging machine, the packaging means is pushed outward by the article to be packaged, so that while the article to be packaged is decelerated, the packaging material is returned to the constricted state again after passing through the article to be packaged. As soon as the package passes, it is possible to prepare to slow down the next package.

  Furthermore, the fifth vertical packaging machine of the present invention feeds the tubular packaging material downward by sandwiching the tubular packaging material with the bag-making tube above the opening of the bag making tube. An upper feed unit having a rotation unit is provided, and the lower feed unit stops the rotation unit to stop the tubular packaging material at the position of the rotation unit of the lower feed unit. By rotating, the cylindrical packaging material is provided so as to be loosened at an intermediate portion of the bag-making cylinder.

  According to the above vertical packaging machine, before the cylindrical packaging material is narrowed by the narrowing portion, the lower feeding portion is stopped, and the cylindrical packaging material is sent downward by the upper feeding portion, thereby forming a cylindrical shape. The packaging material can be loosened to provide a margin for constriction by the constriction. Furthermore, the lower feed portion also functions as a stopper portion for stopping the cylindrical packaging material by stopping when the cylindrical packaging material is loosened, and the cylindrical packaging material is fed to the upper feeding portion and the lower feeding portion. It can be kept loose between the parts.

  Furthermore, in the sixth vertical packaging machine of the present invention, the belt-shaped packaging material is supplied to the bag-making cylinder, and the both side edges of the belt-shaped packaging material are bonded to the outer surface of the bag-making cylinder. A vertical sealer to be formed, and a seal guide that abuts a side edge of the belt-shaped packaging material on the side surface part or both of the vertical sealer and the outer side surface of the vertical sealer. It is characterized by that.

  The above vertical wrapping machine abuts the side edge of the strip-shaped packaging material on the seal guide, so that when the cylindrical packaging material is fed upward by the packaging material feeding section, the loosened cylindrical packaging material is Can be kept out of contact.

  Furthermore, a seventh vertical packaging machine of the present invention includes a guide that covers the side of the bag-making cylinder and the outside of the cylindrical packaging material and closes to the opening, and the guide is provided at the middle part. It is characterized by comprising a window part through which one narrowing means passes.

  The above vertical wrapping machine covers the opening with a guide and effectively prevents the article to be packaged from coming out of the opening and coming into contact with the edge of the opening.

  Furthermore, the eighth vertical packaging machine of the present invention is characterized in that the second narrowing means is provided on the side surface of the opening.

  The vertical wrapping machine described above can gradually reduce the falling speed of the package by means of a plurality of narrowing means arranged on the side of the opening, and the quality of the package can be reduced due to the impact at the time of dropping. The fear can be effectively reduced.

  Furthermore, the ninth vertical packaging machine of the present invention is characterized in that a third narrowing means is provided below the bag-making cylinder.

  The above vertical wrapping machine can further reduce the falling speed of the packaged object even under the bag-making cylinder, and effectively reduce the possibility of deterioration of the quality of the packaged article due to the impact at the time of dropping. Can do.

  Furthermore, the tenth vertical packaging machine of the present invention is characterized in that it has an impact absorbing material on the upper surface of the bag-making cylinder below and a shock absorbing means for narrowing the cylindrical packaging material.

  The above vertical wrapping machine can absorb the impact at the time of the fall of a to-be-packaged object by dropping the to-be-packaged object slowed down by the constriction part further on the impact-absorbing material of the upper surface of an impact-absorbing means. As a result, it is possible to reduce the risk of damage to the article to be packaged or the cylindrical packaging material due to an impact when the article to be packaged is dropped.

Furthermore, in an eleventh packaging method of the present invention, a belt-shaped packaging material is guided around the outer periphery of the bag-making cylinder, and bonded to both side edges of the belt-shaped packaging material to form a cylindrical packaging material. A packaging method in which an article to be packaged is charged and the article to be packaged is filled with the article to be packaged, the sealing process for closing the cylindrical packaging material below the lower end of the bag-making cylinder, and the sealing process A narrowing step of narrowing at the middle portion so that the inner surface of the cylindrical packaging material made close, and a primary dropping step of dropping the article to be packed from above the bag-making cylinder to the narrowed portion formed in the narrowing step, Deceleration process that decelerates or pauses the article to be wrapped that has fallen in the primary dropping process by contacting the stenosis part, and the wrapping material decelerated in the deceleration process by opening the stenosis part to the lower end of the cylindrical packaging material and a secondary fall step of dropping further, the sealing step, between the constriction step, the tubular packaging Back send timber upwards, characterized in that it comprises a relaxation step of loosening the tubular packaging material.

  The above wrapping method reduces the impact when the package falls to the lower end of the cylindrical packaging material by decelerating the package at the constricted portion of the cylindrical packaging material by the deceleration process, and the impact of dropping. It is possible to reduce the possibility that the quality of the article to be packaged will deteriorate.

  The above method creates a margin for constricting the cylindrical packaging material by sending it back upward and loosening it in the relaxation process before constricting the cylindrical packaging material in the deceleration process. The possibility that the cylindrical packaging material is damaged during the process can be reduced.

  Furthermore, the thirteenth packaging method of the present invention is characterized in that the relaxing step loosens the cylindrical packaging material by sending the cylindrical packaging material upward.

  The above packaging method can send a cylindrical packaging material to the upper side, and can make the cylindrical packaging material loose.

  Furthermore, the fourteenth packaging method of the present invention is characterized in that the relaxing step loosens the cylindrical packaging material by sending the cylindrical packaging material downward.

  With the above packaging method, the tubular packaging material can be sent upward from the lower side, and the tubular packaging material can be easily loosened. Furthermore, the cylindrical packaging material can be efficiently brought into a loose state by sending the cylindrical packaging material downward from the upper side.

  Furthermore, in the fifteenth packaging method of the present invention, the bag-making cylinder includes an upper feeding portion above the opening and a lower feeding portion below the opening, and the relaxation step stops the lower feeding portion. The cylindrical wrapping material feeds the upper feed portion downward while making the upper feed portion move.

  The above wrapping method is such that the lower feed part is stopped and the upper feed part feeds the cylindrical packaging material downward so that the lower feed part functions as a stopper part and is loosened by the upper feed part. The packaging material can be kept loose.

  Furthermore, the sixteenth packaging method of the present invention includes an impact absorbing step in which an article to be packaged that is dropped by the secondary dropping step is received by the impact absorbing means and then dropped to the lower end of the cylindrical packaging material. It is characterized by including.

  In the above packaging method, the object to be packaged that has been decelerated in the decelerating process is further received by the impact absorbing means in the shock absorbing process, thereby absorbing the impact when the object to be packaged is dropped and covering the object due to the impact when the object to be packaged is dropped. It is possible to effectively reduce the risk of damage to the package and the cylindrical packaging material.

It is a model perspective view of the vertical packaging machine which concerns on one Embodiment of this invention. It is a disassembled model perspective view of the bag making cylinder which concerns on the vertical packaging machine of FIG. It is a schematic cross section in the IIIA-IIIA line of the vertical packaging machine shown in FIG. It is a schematic cross section which shows the modification of the seal guard shown to FIG. 3A. FIG. 4A is an operation diagram showing a sealing process. FIG. 4B is an operation diagram showing a relaxation process. FIG. 4C is an operation diagram showing the process from the constriction process to the deceleration process. FIG. 4D is an operation diagram showing a secondary dropping process. It is a model perspective view of the vertical packaging machine which concerns on another form of this invention. FIG. 6A is an operation diagram showing a sealing process. FIG. 6B is an operation diagram showing a relaxation process. FIG. 6C is an operation diagram showing the process from the constriction process to the deceleration process. FIG. 6D is an operation diagram showing a secondary dropping process. It is a schematic cross section of the vertical packaging machine which concerns on another form of this invention. It is a schematic cross section of the vertical packaging machine which concerns on another form of this invention. It is a model perspective view of the vertical packaging machine which concerns on another form of this invention. It is sectional drawing in the XX line of the vertical packaging machine shown in FIG. It is sectional drawing in the XI-XI line of the vertical packaging machine shown in FIG. It is a schematic cross section of the vertical packaging machine which concerns on another form of this invention. It is a modification of the vertical packaging machine shown in FIG. It is a modification of the vertical packaging machine shown in FIG. It is a model perspective view of the vertical packaging machine which concerns on another form of this invention. FIG. 16A is an operation diagram showing a sealing process. FIG. 16B is an operation diagram showing a relaxation process. FIG. 16C is an operation diagram showing the process from the constriction process to the deceleration process. FIG. 16D is an operation diagram illustrating the shock absorbing process from the secondary dropping process. It is a schematic cross section of the vertical packaging machine which concerns on another form of this invention. It is a schematic cross section of the vertical packaging machine which concerns on another form of this invention. It is a model perspective view which shows the conventional vertical packaging machine.

  Embodiments of the present invention will be described below with reference to the drawings. However, the example shown below illustrates the vertical packaging machine for embodying the technical idea of the present invention, and the present invention is not limited to the following. Moreover, this specification does not specify the member shown by the claim as the member of embodiment. In particular, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in the embodiments are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Only. Note that the size, positional relationship, and the like of the members shown in each drawing may be exaggerated for clarity of explanation. Furthermore, in the following description, the same name and reference sign indicate the same or the same parts, and detailed description will be omitted as appropriate. Furthermore, each element constituting the present invention may be configured such that a plurality of elements are constituted by the same member and the plurality of elements are shared by one member, and conversely, the function of one member is constituted by a plurality of members. It can also be realized by sharing.

  In the present specification and claims, a pillow packaging or pillow-shaped packaging body is a tubular packaging material formed by bonding a single strip-shaped packaging material in the longitudinal direction at both side edges, and further forming a tubular packaging material. In addition to three-way wrapping that is bonded at two locations in the front and rear directions across the packaging material, the opposite side edges in the width direction of the two strip-shaped packaging materials are bonded to each other in the vertical direction to form a cylindrical packaging material. Four-way wrapping bonded in two directions in the direction crossing the wrapping material, or one strip-shaped wrapping material is bent at the middle so that both outer edges in the width direction are in contact, and both outer edges are bonded to form a tube Form a packaging material, and then bond the folded part facing this adhesive part and adhere it at two places in the front and back in the direction across the cylindrical packaging material, or one of the above three-way packaging and four-way packaging A wide meaning including packaging that is narrowed with a fastener and formed into a purse-like shape In it is using.

Further, in the present specification and claims, the terms “horizontal” or “vertical” are used, but these are not specified to be completely horizontal or vertical, and are slightly inclined from horizontal or vertical. It is used in the meaning that includes the state.
(Embodiment 1)

  FIG. 1 is a schematic perspective view showing a main part of the vertical packaging machine according to the first embodiment. FIG. 2 is an exploded schematic perspective view of FIG. 3A is a cross-sectional view taken along line IIIA-IIIA in FIG. FIG. 4 is an operation diagram of the vertical packaging machine of FIG. A vertical packaging machine shown in FIG. 1 has a former 2 that guides both side edges of a strip-shaped packaging material Fw to approach each other, and a bag-making cylinder 1 that arranges the strip-shaped packaging material Fw guided by the former 2 on its outer surface. And a vertical sealer 4 that forms the tubular packaging material Ft by bonding both side edges of the belt-shaped packaging material Fw in the vertical sealing region 44, and a pillow that is adhered in the direction transverse to the tubular packaging material Ft by the horizontal sealing region 45. A horizontal sealer 5 that forms a cylindrical package, a pressing device 20 that is a narrowing means for narrowing the cylindrical packaging material Ft at an intermediate portion of the bag-making cylinder 1, and a packaging material feeding unit that feeds the cylindrical packaging material Ft downward 3 and a fastener mounting portion 6 for mounting a fastener that clamps a part of the pillow-shaped package.

The vertical packaging machine shown in FIG. 1 forms a tubular packaging material Ft by wrapping a belt-shaped packaging material Fw around the bag-making cylinder 1 and adhering it at both side edges with a vertical sealer 4. The bottom seal portion 5 is used to bond the bottom sealant 5 in a direction crossing the bottom, and the package is filled inside with the horizontal seal region 45 at the bottom end of the cylindrical packaging material Ft as the bottom. The vertical packaging machine shown in the figure can fill a packaged article Ft into the tubular packaging material Ft while feeding the packaged article into the bag-making cylinder 1 while forming the tubular packaging material Ft. Here, the belt-like packaging material Fw is a sheet-like packaging material before the cylindrical packaging material Ft is formed by bonding both side edges with the vertical sealer 4. Moreover, the cylindrical packaging material Ft is a packaging material in a state in which both outer edge portions of the belt-shaped packaging material Fw are bonded by the vertical sealer 4 and formed into a cylindrical shape. As described above, the strip-shaped packaging material Fw is bonded to the vertical sealer 4 while being wound around the bag-making cylinder 1 and formed into the cylindrical packaging material Ft. That is, the belt-like packaging material Fw and the cylindrical packaging material Ft are the same packaging material having different shapes with the vertical sealer 4 as a boundary.
(Bag making cylinder 1)

  A bag-making cylinder 1 shown in FIG. 1 is a cylindrical member. The illustrated bag-making cylinder 1 is provided with its longitudinal direction oriented in the vertical direction. The illustrated bag-making cylinder 1 guides the belt-shaped packaging material Fw to the outer periphery via a former 2. The strip-shaped packaging material Fw shown in the figure is a sheet-like member that has flexibility and can be bonded by heat. For example, a plastic film can be used for the strip-shaped packaging material Fw. An inlet 16 is provided at the upper end of the bag-making cylinder 1. The bag-making cylinder 1 shown in the figure is formed in the cylindrical packaging material Ft by wrapping the belt-shaped packaging material Fw around the outer periphery thereof, and the packaged material is introduced into the insertion port 16 so that the inside of the cylindrical packaging material Ft. Fill the package. FIG. 2 is an exploded schematic perspective view with the guide 11 covering a part of the outer periphery of the bag-making cylinder 1 of FIG. 1 removed. The bag-making cylinder 1 shown in FIG. 2 is provided with two openings 10 facing each other in the middle part of the side part. As shown in FIG. 1, the opening 10 is covered with a guide 11 adjacent thereto.

However, the shape of the bag-making cylinder 1 is not limited to a cylindrical shape, and the outer peripheral shape can be a polygonal shape or the like according to the form of an article to be packaged.
(Guide 11)

  The guide 11 shown in FIG. 1 covers the opening 10 provided on the side surface of the bag-making cylinder 1. As shown in the sectional view of FIG. 3A, the guide 11 is slightly separated from the bag-making cylinder 1 while approaching the outer surface of the bag-making cylinder 1. As shown in FIG. 3A, the belt-shaped packaging material Fw passes between the guide 11 and the bag making cylinder 1. The guide 11 is not directly connected to the bag making cylinder 1 but is connected and fixed to a member such as a frame constituting a vertical packaging machine (not shown), and is positioned relative to the bag making cylinder 1. Has been identified. The guide 11 shown in the figure is such that an article to be packaged passing through the inside of the bag making cylinder 1 comes out of the opening 10 and comes into contact with the edge of the opening 10 to be damaged or deformed. And the cylindrical packaging material Ft are prevented from falling off. The guide 11 shown in the figure is provided with a window portion 12 for allowing the pressing portion 20A, which is a means for constricting the cylindrical packaging material, to pass through at an intermediate portion. The window portion 12 shown in FIG. 1 has a slit shape. The shape of the window portion 12 can be changed according to the shape of the pressing portion 20A that passes therethrough.

However, this guide 11 is not necessarily essential. For example, when the object to be packaged is packaged with an object to be packaged that is strong enough not to be damaged or deformed even if it contacts the edge of the opening 10, or The guide 11 may be omitted when the edge portion is covered with a cushioning material such as a rubber material to prevent the packaged item from being damaged.
(Pressing device 20)

  The pressing device 20 shown in FIG. 1 is a device that narrows the cylindrical packaging material Ft from both sides at the opening 10 of the bag-making cylinder 1. The pressing device 20 in the figure is used as a narrowing means for narrowing the cylindrical packaging material Ft. The pressing device 20 shown in the figure is provided at a position facing the bag-making cylinder 1 as an axis so that the cylindrical packaging material Ft can be narrowed at the openings 10 on both sides of the bag-making cylinder 1. The pressing device 20 shown in the figure has a pressing portion 20A that contacts the outer surface of the cylindrical packaging material Ft and presses it inward, and a direction in which the pressing portion 20A is in contact with the cylindrical packaging material Ft and a direction in which the pressing portion 20A is separated. A power unit 20B to be operated is provided. The pressing portion 20A shown in the drawing is formed in a horizontal rod shape. By making the pressing portion 20A into a horizontal rod shape, the contact surface with the cylindrical packaging material is widened to widen the area of the constricted portion 40 described later. However, the shape of the pressing portion 20A is not specified as a rod shape, and can be changed according to the shape of the article to be packaged. For example, it can be a rectangular parallelepiped shape or a spherical shape. In the illustrated pressing device 20, the pressing portion 20 </ b> A passes through the window portion 12 provided in the guide 11 and presses the tubular packaging material Ft toward the inside. The power unit 20B of the pressing device 20 in the figure uses an air cylinder. However, the power unit 20B of the pressing device 20 is not limited to this, and may be electric power driven by a motor or the like.

  In this vertical packaging machine, the cylindrical packaging material Ft is narrowed by the pressing device 20, and as shown in the sectional view of FIG. 4C, the edge of the opening 10 of the bag-making cylinder 1 and the pressing portion 20A. A narrowed portion 40 in which the inner diameter of the cylindrical packaging material Ft is narrowed is formed between the contact portion and the contact portion. The narrowed portion 40 is formed in a slope shape from the edge of the opening 10 to the contact portion of the pressing portion 20A. When the article to be packaged P comes into contact with or is sandwiched by the narrow portion 40 of the cylindrical packaging material Ft, the falling speed of the article to be packaged P can be reduced. The site | part formed in the slope shape of this constriction part 40 can absorb the force of the vertical direction component of the to-be-packaged goods P efficiently. Furthermore, since the cylindrical packaging material Ft is a sheet having flexibility, it can more efficiently absorb the force of the component in the vertical direction of the package P by being bent when contacting the package P. Can do. Thereby, the vertical packaging machine of a figure prevents the crack and deformation | transformation by the impact at the time of the fall of the to-be packaged object P, and reduces the possibility that the quality of the to-be-packaged object P may fall.

Moreover, the pressing device 20 shown in the drawing temporarily holds the article P to be packaged on the pressing portion 20A. The speed at the time of falling to the bottom part of the cylindrical packaging material Ft is further reduced by receiving the packaging object P at the pressing portion 20A while decelerating the packaging material P at the narrowed portion 40 of the cylindrical packaging material Ft. Can do. Further, when receiving the article P to be packaged by the pressing portion 20A, since the speed is reduced by the narrowed portion 40 of the cylindrical packaging material Ft, the impact at the time of receiving is reduced and damage to the article P to be packaged is prevented. be able to. However, it is not always essential to hold the article to be packaged P on the pressing portion 20A. This is because the dropping speed of the package P can be reduced at the narrowed portion 40 without being temporarily held by the pressing portion 20A.
(Packaging material feeding part 3)

  The packaging material feeding part 3 shown in FIG. 1 is provided outside the bag-making cylinder 1 and adjacent to the lower end part. The packaging material feeding unit 3 shown in the figure includes a rotating unit 3A that rotates in contact with the cylindrical packaging material Ft, and a power unit 3B that rotates the rotating unit 3A. The rotating part 3 </ b> A of the packaging material feeding part 3 shown in the drawing holds the cylindrical packaging material Ft between the bag-making cylinder 1. The cylindrical packaging material Ft is fed in the vertical direction by rotating the rotating part 3A of the packaging material feeding part 3 in the figure. The power unit 3B of the packaging material feed unit 3 shown in FIG. 1 includes a forward rotation in which the cylindrical packaging material Ft is sent downward, and a reverse rotation in which the cylindrical packaging material Ft is sent upward. Can be switched. For example, a motor can be used as the power unit 3B. When forming the cylindrical packaging material Ft, the packaging material feeding unit 3 shown in the drawing feeds the cylindrical packaging material Ft downward by forward rotation. In addition, when the pressing device 20 narrows the cylindrical packaging material Ft, the packaging material feeding unit 3 shown in the drawing has the cylindrical packaging material Ft turned upward in advance by reverse rotation before the pressing device 20 narrows the cylindrical packaging material Ft. By sending, the cylindrical packaging material Ft can be loosened and a margin can be provided for the cylindrical packaging material Ft to be narrowed by the pressing device 20. Thus, by giving allowance to the cylindrical packaging material Ft, the load applied to the cylindrical packaging material Ft when it is narrowed is reduced, and the possibility that the cylindrical packaging material Ft is broken is reduced.

  However, the aspect of the packaging material feeding part 3 is not specified above. For example, two or more rotating parts 3A can be arranged in the vertical direction. Further, the rotating parts 3A arranged in the vertical direction are respectively assigned to forward rotation and reverse rotation, and by rotating one of the two rotating parts, the cylindrical packaging material Ft is moved upward or downward. It is also possible to send it. Moreover, it can also be set as the aspect which each provides the packaging material feed part 3 in the up-down position of an opening part like Embodiment 2 mentioned later.

Further, the shape of the packaging material feeding section 3 is not specified as a roller shape as shown in FIG. It is also possible to feed the cylindrical packaging material by arranging a belt-like rotating portion that can rotate in the vertical direction and rotating the belt with the surface of the belt contacting the cylindrical packaging material. By making the rotating portion into a belt shape, the contact surface with the cylindrical packaging material can be widened and the cylindrical packaging material can be efficiently fed. In addition, an infinite number of small-diameter holes are provided on the surface of the belt, and further, air is sucked from the exposed surface of the belt toward the inner surface through the hole, thereby adsorbing the cylindrical packaging material to the surface of the belt. A vacuum belt that can be used may be used. By adsorbing the cylindrical packaging material in this way, the cylindrical packaging material can be sent more efficiently. In addition, the above packaging material feeding part is an example, and it cannot be overemphasized that other well-known means can be utilized.
(Vertical sealer 4)

  The vertical packaging machine shown in FIG. 1 is provided with a vertical sealer 4 that forms a cylindrical packaging material Ft by adhering both side edges of the strip-shaped packaging material Fw to the outer surface of the bag-making cylinder 1. FIG. 3A is a schematic cross-sectional view taken along line IIIA-IIIA of the vertical packaging machine shown in FIG. The vertical sealer 4 shown in the figure includes a pair of seal blocks that heat-seal the two side edges of the strip-shaped packaging material Fw. The vertical sealer 4 in FIG. 3A includes a vertical seal block 4b and a vertical seal block 4a with a heater opposed to the vertical seal block 4b. The vertical sealer 4 shown in FIG. 1 forms a tubular packaging material Ft as shown in FIG. 1 by adhering both side edges of the belt-shaped packaging material Fw with the vertical sealing block 4b and the vertical sealing block 4a with a heater. . The cylindrical packaging material Ft in FIG. 1 is bonded by a vertical sealer 4 to provide a vertical sealing region 44 that is a heat-sealed region at both side edges of the strip-shaped packaging material Fw. In the illustrated vertical sealer 4, a seal guide 14 is provided between the vertical seal block 4 a with heater and the bag-making cylinder 1. The illustrated seal guide 14 is a plate-like material. In the illustrated seal guide 14, when the packaging material feeding unit 3 rotates in the reverse direction to loosen the cylindrical packaging material Ft, the loose vertical seal region 44 comes into contact with the vertical seal block 4 a with heater and the heat of the heater is increased. To prevent melting.

  Although the seal block provided with the heater of the vertical sealer 4 is on the right side in FIG. 3A, it goes without saying that the heater may be provided on either of the left and right seal blocks. However, in order to prevent the vertical seal block 4a with a heater and the vertical seal area | region 44 of the cylindrical packaging material Ft from contacting, it is necessary to provide the seal guide 14 in the seal block side which provided the heater.

  The seal guide 14 shown in FIG. 3A is provided between the bag-making cylinder 1 and the vertical seal block 4a with heater. As shown in the modification of the vertical packaging machine in FIG. It can also be arranged outside the block 4a. The vertical packaging machine shown in FIG. 3B is provided with an inner seal guide 54 positioned between the bag-making cylinder 1 and the vertical seal block 4a with a heater. Further, the vertical packaging machine shown in the drawing is provided with an outer seal guide 55 on the outer side of the vertical seal block 4a with heater. Such a structure can effectively prevent the vertical seal region 44 of the cylindrical packaging material from contacting the vertical seal block 4a with a heater. The outer seal guide 55 shown in the drawing is in contact with the side edges of the strip-shaped packaging material Fw positioned outside the vertical seal block 4a with heater, that is, the vertical sealing region 44 of the cylindrical packaging material, on the side surface. The seal region 44 is prevented from unexpectedly contacting the vertical seal block 4a with a heater.

Further, the vertical sealer 4 shown in FIGS. 3A and 3B is shown with arrows so that the vertical seal block 4a with heater and the vertical seal block 4b are close to each other and adhere to both side edges of the strip-shaped packaging material Fw. However, it is not necessary that both seal blocks move. The vertical sealer can be in a state in which one of the vertical seal block with heater and the vertical seal block is movably provided and the other is fixed. Any one of the vertical seal block with heater and the vertical seal block may be fixed as long as both side edges of the strip-shaped packaging material Fw can be bonded to form the cylindrical packaging material Ft. Thereby, a part of the mechanism for moving the vertical sealer can be omitted, and the structure of the vertical sealer can be simplified.
(Horizontal sealer 5)

  The vertical packaging machine shown in FIG. 1 is provided with a horizontal sealer 5 that forms a pillow-shaped package by bonding in a direction crossing the cylindrical packaging material Ft below the bag-making cylinder 1. The illustrated horizontal sealer 5 is provided with two pairs of seal blocks in the vertical direction for tightly sealing the cylindrical packaging material Ft from both sides and heat-sealing. The illustrated horizontal sealer 5 includes an upper heater block 5a and an upper seal block 5b at a position facing the upper heater block 5a. Further, the illustrated horizontal sealer 5 has a lower heater block 5x below the upper heater block 5a. Further, a lower seal block 5y is provided at a position facing the lower heater block 5x. Further, the illustrated horizontal sealer 5 has a cutter 35 between the upper seal block 5b and the lower seal block 5y. In the illustrated horizontal sealer 5, the seal blocks are respectively provided in a horizontal posture, and the cylindrical sealant Ft is tightly attached in a direction crossing from both sides. The horizontal sealer 5 in the figure forms an upper horizontal seal region that closes the upper end of the pillow-shaped package and a lower horizontal seal region 45 that closes the lower end of the tubular packaging material Ft, and at the same time, the upper horizontal seal region. And the lower horizontal seal region 45 can be cut by a cutter 35 to separate the pillow-shaped package from the cylindrical package material Ft.

In addition, although the horizontal sealer 5 shown in FIG. 1 arrange | positions the heater in the near side of a figure, a heater may be provided in any side of the near side and back side of FIG. 1 is provided between the upper seal block 5b and the lower seal block 5y, but may be disposed between the upper heater block 5a and the lower heater block 5x.
(Former 2)

The vertical packaging machine of FIG. 1 is provided with a former 2 that covers the upper end of the bag-making cylinder 1. The band-shaped packaging material Fw supplied to the illustrated bag-making cylinder 1 is guided by the former 2 so as to cover the periphery of the bag-making cylinder 1. The strip-shaped packaging material Fw in the figure is curved so that the side edges approach each other by moving along the former 2.
(Fastening part 6)

The vertical packaging machine of FIG. 1 is provided with a fastener mounting portion 6 that scans in the horizontal direction at a position below the horizontal sealer 5. The fastener mounting portion 6 shown in the figure is scanned in a direction parallel to the direction of the lateral seal region 45 at the same time that the pillow-shaped package body is cut off by the horizontal sealer 5, and clamps the upper part of the pillow-shaped package body. Installing. By attaching this fastener, the pillow-shaped package can be formed into a drawstring shape. As this fastener, for example, a plastic plate or a tape can be used. However, this fastener mounting part 6 may be omitted. Further, in FIG. 1, the fastener mounting portion 6 is disposed on the left side of the bag-making cylinder 1, but the fastener mounting portion 6 may be disposed at any position on the left and right of the bag-making cylinder 1.
(Packaging method)

The packaging method by the above vertical packaging machine is demonstrated using the schematic operation | movement diagram shown to FIG. The above-described packaging method using the vertical packaging machine includes a sealing process, a relaxation process, a constriction process, a primary dropping process, a deceleration process, and a secondary dropping process.
(Sealing process)

First, in the sealing process, as shown in FIG. 4A, the vertical packaging machine causes the cylindrical packaging material Ft sent from above the bag-making cylinder 1 to move in a fixed position as the packaging material feeding unit 3 rotates in the forward direction. The lower end is closed by the lateral seal region 45.
(Relaxation process)

Next, as shown in FIG. 4B, the cylindrical packaging material Ft whose lower end is closed by the horizontal sealing region 45 by the sealing process is rotated upward by rotating the packaging material feeding unit 3 in the reverse direction as shown in FIG. 4B. Rewind. Thereby, the cylindrical packaging material Ft will be in the state which the upper part loosened rather than the packaging material feeding part 3. FIG. According to this process, before the cylindrical packaging material Ft is narrowed in the next narrowing process, the cylindrical packaging material Ft can be provided with a margin for constriction, and the load applied to the cylindrical packaging material Ft at the time of narrowing. The possibility that the cylindrical packaging material Ft is damaged can be reduced.
(Stenosis process)

Next, as shown in FIG. 4C, the cylindrical packaging material Ft that has been rewound in the relaxation process is narrowed by the pressing portion 20 </ b> A of the pressing device 20 at the intermediate portion of the bag-making cylinder 1 to form the narrowed portion 40. .
(Primary drop process)

Furthermore, as shown in FIG. 4C, after the cylindrical packaging material Ft is narrowed in the narrowing step, the packaged material P is loaded from the loading port 16 at the top of the bag-making cylinder 1, and the packaged material P is loaded up to the narrowed portion 40. Drop primary.
(Deceleration process)

Furthermore, as shown in FIG. 4C, the article P to be packaged that has fallen to the narrowed portion 40 in the primary dropping step is brought into contact with and held by the narrowed portion 40, thereby decelerating or temporarily stopping. According to this process, the falling speed of the package P can be reduced, the impact applied to the package P at the time of dropping can be reduced, and the possibility that the package P may be damaged or deformed by the impact of the drop can be reduced. it can.
(Secondary drop process)

  Finally, as shown in FIG. 4D, after the article P is decelerated in the deceleration process, the pressing portion 20A is separated from the cylindrical packaging material Ft. Thereby, the narrow part 40 of the cylindrical packaging material Ft is opened, and the article P to be wrapped that has been decelerated or stopped at the narrow part 40 is secondarily dropped downward. The to-be-packaged product P in the figure falls to the horizontal seal region 45 at the lower end of the cylindrical packaging material Ft.

  After the above steps, the packaging material feeding unit 3 rotates in the forward direction and feeds the cylindrical packaging material Ft downward to a predetermined position. Further, the cylindrical packaging material Ft sent downward is bonded to the package P by a lateral seal region to form a pillow-shaped packaging body, and the pillow-shaped packaging body is separated from the cylindrical packaging body Ft. Thereby, the sealing process for packaging the to-be-packaged product P to be input next can be performed while enclosing the to-be-packaged product P inside the pillow-shaped package.

  As described above, the vertical packaging machine according to the first embodiment narrows the cylindrical packaging material Ft by the pressing device 20 at the opening 10 provided in the middle portion in the vertical direction of the bag-making tube 1, and this narrowed portion. By decelerating or stopping the article to be packaged P passing through the inside of the bag-making cylinder 1 at 40, the impact at the time of dropping the article to be packaged P is reduced, and the article to be packaged P is cracked or deformed and the quality is lowered. The risk of doing this is effectively reduced. Further, the bag-making cylinder 1 shown in the figure only has an opening 10 on the side surface, and does not have a complicated mechanical structure, so that the bag-making cylinder 1 is easily maintained. Furthermore, since the pressing portion 20A does not directly contact the packaged object P and decelerate, but the inner surface of the narrow cylindrical packaging material Ft is brought into contact with the packaged object P to decelerate the packaged object P. For example, even when a packaged object whose surface is covered with a coating such as moisture or powder is packaged, the coating of the packaged object P does not adhere to the pressing portion 20A. Therefore, the above vertical wrapping machine can package in a sanitary manner even during a long continuous operation. In addition, the structure that prevents the covering from adhering to the pressing portion 20A in this way has an excellent effect on the maintainability of the pressing portion 20A. Furthermore, even if a fine substance such as dust floating from the outside adheres to the pressing portion 20A, the pressing portion 20A does not come into contact with the article to be packaged P, so that sanitary packaging can be performed.

The vertical packaging machine according to Embodiment 1 has been described above. Hereinafter, Embodiments 2 to 7 different from Embodiment 1 will be described. In addition, detailed description is abbreviate | omitted about the member same or the same quality as the vertical packaging machine of Embodiment 1. FIG.
(Embodiment 2)

  In FIG. 5, the perspective view of the vertical packaging machine of Embodiment 2 is shown. The vertical packaging machine shown in the drawing is provided with packaging material feeding sections on the upper side and the lower side of the two openings 10 provided in the middle part of the bag-making cylinder 1. The packaging material feeding part includes an upper feeding part 30 provided above the opening part and a lower feeding part 31 provided below the opening part.

  The upper feed unit 30 in the figure includes an upper rotating unit 30A and an upper power unit 30B. The upper rotating part 30 </ b> A holds the belt-shaped packaging material Fw between the bag-making cylinder 1. Upper power unit 30B is connected to upper rotating unit 30A. The upper feeding unit 30 in the figure feeds the belt-shaped packaging material Fw downward by rotating the upper rotating unit 30A in the forward direction by the upper power unit 30B.

  Further, the lower feed portion 31 in the figure includes a lower rotating portion 31A and a lower power portion 31B. The lower rotating portion 31 </ b> A holds the cylindrical packaging material Ft between the bag-making cylinder 1. The lower power unit 31B is connected to the lower rotating unit 31A. The lower feed portion 31 in the drawing feeds the cylindrical packaging material Ft downward as the lower rotating portion 31A rotates in the forward direction by the lower power portion 31B.

Below, the packaging method by the vertical packaging machine of the above Embodiment 2 is demonstrated using the schematic operation | movement diagram shown to FIG. The above-described packaging method using the vertical packaging machine includes a sealing process, a relaxation process, a constriction process, a primary dropping process, a deceleration process, and a secondary dropping process.
(Sealing process)

First, in the sealing process, as shown in FIG. 6A, the vertical packaging machine receives the cylindrical packaging material Ft sent from above the bag-making cylinder 1 by the rotation of the lower feeding part 31 and the upper feeding part 30. It stops at a fixed position, and the lower end is closed by the horizontal seal region 45.
(Relaxation process)

Next, as shown in FIG. 6B, in the loosening process, the upper feed part 30 is moved in the state in which the lower side feed part is stopped, as shown in FIG. 6B. By rotating in the forward direction, the packaging material is supplied to the bag-making cylinder 1 from the outside. Thereby, the cylindrical packaging material Ft will be in the loosened state between the upper side feed part 30 and the lower side feed part 31. FIG. According to this process, before the cylindrical packaging material Ft is narrowed in the next deceleration process, the cylindrical packaging material Ft can be provided with a margin for constriction, and the load applied to the cylindrical packaging material Ft at the time of narrowing. The possibility that the cylindrical packaging material Ft is damaged can be reduced.
(Stenosis process)

Next, as shown in FIG. 6C, the tubular packaging material Ft that has been loosened in the loosening step is narrowed by the pressing portion 20 </ b> A of the pressing device 20 at the middle portion of the bag-making cylinder 1 to form the narrowed portion 40. .
(Primary drop process)

Further, as shown in FIG. 6C, after the cylindrical packaging material Ft is narrowed in the narrowing step, the packaged material P is loaded from the loading port 16 at the top of the bag-making cylinder 1, and the packaged material P is loaded up to the narrowed portion 40. Drop primary.
(Deceleration process)

Furthermore, as shown in FIG. 6C, the article P to be packaged that has fallen to the constricted portion 40 in the primary dropping step is brought into contact with and held by the constricted portion 40, thereby decelerating or temporarily stopping. According to this process, the falling speed of the package P can be reduced, the impact applied to the package P at the time of dropping can be reduced, and the possibility that the package P may be damaged or deformed by the impact of the drop can be reduced. it can.
(Secondary drop process)

  Finally, as shown in FIG. 6D, after the article P is decelerated in the deceleration process, the pressing portion 20A is separated from the cylindrical packaging material Ft. Thereby, the narrow part 40 of the cylindrical packaging material Ft is opened, and the article P to be wrapped that has been decelerated or stopped at the narrow part 40 is secondarily dropped downward. The to-be-packaged product P in the figure falls to the horizontal seal region 45 at the lower end of the cylindrical packaging material Ft.

  After the above steps, the upper feed unit 30 and the lower feed unit 31 rotate to feed the cylindrical packaging material Ft downward to a predetermined position. Further, the cylindrical packaging material Ft sent downward is bonded to the package P by a lateral seal region to form a pillow-shaped packaging body, and the pillow-shaped packaging body is separated from the cylindrical packaging body Ft. Thereby, the sealing process for packaging the to-be-packaged product P to be input next can be performed while enclosing the to-be-packaged product P inside the pillow-shaped package.

  The vertical packaging machine according to the second embodiment has been described above. In the above vertical wrapping machine, the upper feed unit 30 and the lower feed unit 31 each send the cylindrical packaging material Ft downward only by rotation in a certain direction, and the cylindrical packaging material Ft in the relaxation process. Can be loosened. Since it is not necessary to switch the rotation directions of the upper feed unit 30 and the lower feed unit 31 as described above, the cylindrical packaging material Ft can be efficiently fed downward. Further, the rotating portion 31A of the lower feed portion 31 also functions as a stopper portion for preventing the cylindrical packaging material Ft from moving during the stop, and can keep the cylindrical packaging material Ft in a loose state. .

  However, in FIG. 5 and FIG. 6, the upper feed unit 30 and the lower feed unit 31 show the rotation direction only in the direction in which the cylindrical packaging material Ft is sent downward, respectively, but the cylindrical packaging material Ft Needless to say, it can be provided so as to rotate in the direction opposite to the rotation direction shown in order to adjust the position of the lens.

  Although the vertical packaging machine and the packaging method thereof according to the second embodiment have been described, the relaxation process is performed while providing the packaging material feeding portions at the upper and lower positions of the opening 10 of the bag-making cylinder 1 as in the second embodiment. The upper feed portion 30 may be stopped and the lower feed portion 31 may be rotated in the reverse direction to feed the tubular packaging material Ft upward to loosen the tubular packaging material Ft. Thereby, the upper side feed part 30 can be utilized also as a stopper part for preventing the cylindrical packaging material Ft from moving upwards more than necessary.

  Further, in the relaxation process, while rotating the upper feeding part 30 so as to send the cylindrical packaging material Ft downward, the lower feeding part 31 is rotated reversely as in the first embodiment to send back the cylindrical packaging material Ft. May be. By sending the cylindrical packaging material Ft from the upper side and the lower side of the opening part 11 toward the opening part 11, the cylindrical packaging material Ft can be loosened efficiently.

  Or you may enable it to switch the packaging method of Embodiment 1 and Embodiment 2 with one vertical packaging machine.

The vertical packaging machine according to Embodiments 1 and 2 has been described above. However, in the above vertical packaging machine, the narrowing means for narrowing the cylindrical packaging material Ft is the pressing device 20 including the pressing portion 20A and the power portion 20B for operating the pressing portion 20A. The means for constricting the packaging material Ft is not specified in this. Hereinafter, Embodiment 3 using a narrowing means different from Embodiments 1 and 2 will be described. In the third to seventh embodiments described below, as shown in the first embodiment, the packaging material feeding portion 3 is provided on the lower side as illustrated in FIG. 1 of the first embodiment. Thus, the packaging material feeding part may be provided above and below the opening part, respectively.
(Embodiment 3)

  The vertical packaging machine shown in FIG. 7 is a power for moving the leaf spring 23A and the leaf spring 23A in a direction toward and away from the tubular packaging material Ft as a narrowing means for narrowing the tubular packaging material Ft. A pressing device 23 including a portion 23B is provided. Since the other members are the same as those in the first embodiment, the illustration is partially omitted and the detailed description is omitted. The plate spring 23A shown in the figure is a plate-like member having elasticity and curved at an intermediate portion. One end of the leaf spring 23A shown in the figure is connected to the tip of an air cylinder which is a power unit 23B. Further, the leaf spring 23A shown in the drawing is curved at the intermediate portion, and the other end side is directed downward. The leaf springs 23A shown in the figure are provided in a pair at two opposing positions. The pair of leaf springs 23A in the drawing are close to each other at their apexes. The distance between the leaf springs 23A shown in the figure can be adjusted by an air cylinder which is a power unit 23B connected to the upper end. The cylindrical packaging material Ft in the figure forms a constricted portion 40 along the surface of the plate spring 23A by the plate spring 23A coming into contact with the outer surface and constricting.

  By putting the article to be packaged P in a state in which the cylindrical packaging material Ft is constricted by the plate spring 23A as described above, the article to be packaged P causes the constricted portion 40 of the cylindrical packaging material Ft and the plate spring 23A to move outward due to the load. Pass through while spreading. Such a structure can reduce the dropping speed of the article P to be packaged by the contact resistance with the narrowed portion 40 and reduce the impact at the time of dropping. Further, the position of the leaf spring 23A shown in the figure is adjusted by the power portion 23B connected to the upper end portion, so that the distance between the pair of leaf springs 23A is the size and shape of the article P to be packaged passing through the bag-making cylinder 1 and the like. It is possible to make the distance suitable for the form. The leaf spring 23A shown in the figure is in a state in which the tubular packaging material Ft is again narrowed by elasticity from the state where the packaged object P has passed through and then pushed outward. Thereby, at the same time as the article to be packaged P passes through the constricted portion 40, preparation for decelerating the article to be packaged P to be input next can be made, and the packaging efficiency can be improved.

  Needless to say, the member in contact with the cylindrical packaging material Ft of the pressing device 23 is not specified by the plate spring 23A. The leaf spring is an example, and the material and shape are not particularly specified. As long as the cylindrical packaging material Ft can be constricted to decelerate the article P, another member can be used. For example, a cushion material such as urethane can be attached to the tip of the power unit 23B. Alternatively, a member having elasticity such as rubber may be used.

However, the above pressing device 23 can also temporarily stop the article P to be packaged by the plate spring 23A, similarly to the pressing device 20 of the first embodiment, by adjusting the position of the plate spring 23A by the power unit 23B. . Thereby, according to the form of the to-be packaged object P, it can be selected whether it only decelerates or makes it stop temporarily.
(Embodiment 4)

  Furthermore, Embodiment 4 using a narrowing means different from Embodiments 1 and 2 will be described. The vertical packaging machine shown in FIG. 8 is provided with injection nozzles 24 at positions facing each other on the outer side of the opening 10 of the bag-making cylinder 1 as narrowing means for narrowing the tubular packaging material Ft. Since other members are the same as those in the first embodiment, some illustrations and detailed descriptions are omitted. The illustrated injection nozzle 24 can inject gas from the tip. The injection nozzle 24 shown in the figure is provided at a position facing each other so that the tip faces each other. In the illustrated vertical packaging machine, the narrow packaging portion 40 is formed by causing the cylindrical packaging material to approach from both sides by the gas sprayed from the tip of the spray nozzle 24.

  In the above vertical packaging machine, the packaged material P is introduced in a state in which the cylindrical packaging material Ft is narrowed by the gas sprayed from the spray nozzle 24, so that the packaged material P causes the narrowed portion 40 to be formed by the load. Drops downward while pushing outward. Such a structure can reduce the dropping speed of the article P to be packaged by the contact resistance with the narrowed portion 40 and reduce the impact at the time of dropping. Further, the narrowing means described above adjusts the gas pressure of the injection nozzle 24 so that the inner width of the narrowed portion 40 of the tubular packaging material Ft is changed to the form of the package P passing through the inside of the bag-making tube 1. Can be matched. Further, the injection nozzle 24 shown in the figure continuously injects gas at a constant gas pressure, and after the article to be packaged P passes through the constricted portion 40 while expanding, the cylindrical packaging material Ft is again constricted. become. Thereby, at the same time as the article to be packaged P passes through the constricted portion 40, preparation for decelerating the article to be packaged P to be input next can be made, and the packaging efficiency can be improved.

  Needless to say, the injection nozzle 24 may intermittently inject the gas in synchronism with the timing when the article to be packaged P is inserted, instead of continuously injecting the gas. For example, the cylindrical packaging material Ft can be narrowed by the injection nozzle 24 injecting gas only at the timing when the article to be packaged P passes through the position of the injection nozzle 24.

Furthermore, in addition to the first to third embodiments in which the narrowing means is provided on the side surface portion of the bag-making cylinder 1, the second and third narrowing means are provided below the bag-making cylinder 1. You can also.
(Embodiment 5)

  FIG. 9 is a schematic perspective view showing a main part of the vertical packaging machine according to the fifth embodiment. FIG. 10 is a schematic cross-sectional view taken along line XX in FIG. 11 is a schematic cross-sectional view taken along line XI-XI in FIG. The vertical wrapping machine shown in FIG. 9 has a second constriction means between the lower end of the bag-making cylinder 1 and the lateral seal region 45 in addition to the first constriction means provided on the side of the opening 10. Provided. Further, the vertical packaging machine shown in the figure is provided with third constricting means below the horizontal sealer 5. The second narrowing means and the third narrowing means in the figure use the spray nozzle 26 and the spray nozzle 28, respectively. The injection nozzles 26 and 28 may be the same as the injection nozzle 24 used as the narrowing means of the fourth embodiment. The illustrated bag-making cylinder 1 has an opening 10 provided at an intermediate portion, and the cylindrical packaging material Ft can be narrowed by a pressing device 20 as a first narrowing means. Further, as shown in FIG. 11, the vertical packaging machine narrows the cylindrical packaging material Ft below the bag-making cylinder 1 by the injection nozzles 26 and 28 as the second and third narrowing means. 40 is provided.

  According to the above structure, the article to be packaged P put into the bag-making cylinder 1 can be decelerated stepwise by the narrowed portions 40 provided at a plurality of locations. Further, as shown in FIG. 10 or FIG. 11, the vertical packaging machine is configured so that the horizontal sealing region 45 that is the lower end of the cylindrical packaging material Ft is positioned below the horizontal sealer 5. Even if the package P is inserted from the upper end, it is decelerated stepwise by the injection nozzles 26 and 28 until the package P reaches the horizontal seal region 45 at the bottom, and the impact when the package P falls. The possibility of breakage or deformation can be reduced. Thereby, while sending cylindrical packaging material Ft below, the to-be-packaged goods P can be dropped to the bottom part simultaneously, and the efficiency of packaging work can be improved.

  However, in the above vertical wrapping machine, the first narrowing means in the opening 10 of the bag-making cylinder 1 uses the pressing device 20, but the leaf spring 23A of Embodiment 3 and the injection nozzle of Embodiment 4 are used. Other constriction means such as 24 can be used. The second and third constricting means can be the pressing devices described in the first and third embodiments.

Furthermore, in addition to the fifth embodiment described above, a plurality of constricting means may be provided on the side of the opening 10. Hereinafter, Embodiment 6 in which a plurality of constricting means is provided on the side of the opening 10 will be described.
(Embodiment 6)

  FIG. 12 is a schematic cross-sectional view of the vertical packaging machine according to the sixth embodiment. The vertical packaging machine shown in FIG. 12 is provided with a plurality of narrowing means arranged side by side in the vertical direction on the side of the opening 10 provided in the middle part of the bag-making cylinder 1. The vertical packaging machine shown in the figure is provided with a pressing device 20 on the side of the opening 10 and an injection nozzle 24 on the side of the opening 10 and below the pressing device 20. In the vertical packaging machine shown in the figure, the opening 10 is narrowed at two places by the pressing device 20 and the injection nozzle 24. As described above, the structure in which the plurality of constricted portions 40 are provided in the opening 10 of the bag-making cylinder 1 further reduces the dropping speed of the packaged product P inside the bag-making cylinder 1, and the impact when the packaged product P is dropped. It is possible to more effectively reduce the possibility that the quality due to the deterioration.

  Further, the sixth embodiment described above is not limited to the combination of the pressing device 20 and the injection nozzle 24 as shown in FIG. As shown in FIG. 13, a plurality of sets of injection nozzles 24 may be arranged on the side of the opening 10. Alternatively, as shown in FIG. 14, a plurality of pressing devices 20 may be provided in the vertical direction. As described above, the vertical packaging machine of the sixth embodiment can be configured by combining a plurality of stenosis means used in the first to third embodiments.

However, the vertical packaging machine shown in FIGS. 12 to 14 is provided with the injection nozzles 26 and 28 that are narrowing means below the bag-making cylinder 1, but the narrowing means below the bag-making cylinder 1 is omitted. You can also
(Embodiment 7)

Furthermore, Embodiment 7 provided with the narrowing means different from Embodiment 5 and 6 below the bag making cylinder 1 is demonstrated. FIG. 15 is a schematic perspective view of the vertical packaging machine according to the seventh embodiment. The vertical packaging machine shown in FIG. 15 includes a narrowing means between the lower end of the bag-making cylinder 1 and the horizontal sealer 5. The constriction means shown in the figure has an impact absorbing plate 70 and an impact absorbing material 80.
(Shock absorbing plate 70)

The shock absorbing plate 70 in the figure is a pair of plate-like materials, and each is disposed below the bag-making cylinder 1 and at a position facing the cylindrical packaging material Ft as an axis. The members of the shock absorbing plate 70 are not particularly specified, but for example, a metal plate or a plastic plate can be used. Further, the shock absorbing plate 70 in the figure is provided with a shock absorbing material 80 on the upper surface thereof. Although not shown, the shock absorbing plate 70 includes a power unit that moves in a direction in which the pair of shock absorbing plates 70 approach each other, and can narrow the cylindrical packaging material Ft. The power unit can use an air cylinder, a motor, or the like.
(Shock absorber 80)

  The shock absorber 80 shown in the figure is a member having cushioning properties. The shock absorbing material 80 in the figure covers the upper surface of the shock absorbing plate 70. For example, urethane can be used as the shock absorber 80. Other members having elasticity such as a rubber material may be used. The shock absorbing member 80 is fixed to the upper surface of the shock absorbing plate 70 and can be moved in conjunction with the operation of the shock absorbing plate 70.

  The shock absorbing plate 70 and the shock absorbing material 80 described above can move in the direction of constricting the cylindrical packaging material Ft. The shock absorbing plate 70 and the shock absorbing material 80 shown in the figure further receive on the upper surface the package P decelerated by the narrowed portion 40 of the cylindrical packaging material Ft formed by the pressing device 20, and reduce the impact when dropped. can do.

  Below, the packaging method by the vertical packaging machine of Embodiment 7 provided with the impact-absorbing board 70 and the impact-absorbing material 80 is demonstrated using the schematic operation | movement diagram shown to FIG. The above-described packaging method using the vertical packaging machine includes a sealing process, a relaxation process, a narrowing process, a primary dropping process, a deceleration process, a secondary dropping process, and an impact absorbing process.

Note that the broken-line shock absorbing plate 70 and the shock absorbing material 80 shown in FIGS. 16A and 16B are on the back side shown in FIG. Further, the shock absorbing plate 70 and the shock absorbing material 80 indicated by solid lines in FIGS. 16C and 16D are the front side shown in FIG. 16A and 16B, the shock absorbing plate 70 and the shock absorbing material 80 are separated from the cylindrical packaging material Ft, and in FIGS. 16C and 16D, the cylindrical packaging material Ft is constricted. Show.
(Sealing process)

First, in the sealing process, as shown in FIG. 16A, the vertical packaging machine causes the cylindrical packaging material Ft sent from above the bag-making cylinder 1 to move in a fixed position as the packaging material feeding unit 3 rotates in the forward direction. The lower end is closed by the lateral seal region 45.
(Relaxation process)

Next, the cylindrical packaging material Ft whose lower end is closed by the horizontal sealing region 45 by the sealing process is rotated upward by rotating the packaging material feeding unit 3 in the reverse direction as shown in FIG. 16B by the relaxation process. Rewind. Thereby, the cylindrical packaging material Ft will be in the state which the upper part loosened rather than the packaging material feeding part 3. FIG. According to this process, before the cylindrical packaging material Ft is narrowed in the next narrowing process, the cylindrical packaging material Ft can be provided with a margin for constriction, and the load applied to the cylindrical packaging material Ft at the time of narrowing. The possibility that the cylindrical packaging material Ft is damaged can be reduced.
(Stenosis process)

Next, as shown in FIG. 16C, the cylindrical packaging material Ft that has been rewound in the relaxation process is narrowed by the pressing portion 20 </ b> A of the pressing device 20 at the intermediate portion of the bag-making cylinder 1 to form the narrowed portion 40. . Further, below the bag-making cylinder 1, the shock absorbing plate 70 and the shock absorbing material 80 provided as a pair move so as to approach each other, and the lower end portion of the cylindrical packaging material Ft is narrowed.
(Primary drop process)

Further, as shown in FIG. 16C, after the cylindrical packaging material Ft is narrowed in the narrowing step, the packaged material P is loaded from the loading port 16 at the top of the bag-making cylinder 1, and the packaged material P is filled up to the narrowed portion 40. Drop primary.
(Deceleration process)

Furthermore, as shown in FIG. 16C, the article P to be packaged that has fallen to the narrowed portion 40 in the primary dropping step is brought into contact with and held by the narrowed portion 40, thereby decelerating or temporarily stopping. According to this process, the falling speed of the package P can be reduced, the impact applied to the package P at the time of dropping can be reduced, and the possibility that the package P may be damaged or deformed by the impact of the drop can be reduced. it can.
(Secondary drop process)

Furthermore, as shown in FIG. 16D, after the article P is decelerated in the decelerating process, the pressing portion 20A is separated from the cylindrical packaging material Ft. Thereby, the narrow part 40 of the cylindrical packaging material Ft is opened, and the article P to be wrapped that has been decelerated or stopped at the narrow part 40 is secondarily dropped downward.
(Shock absorption process)

  Finally, as shown in FIG. 16D, the packaged material P that has dropped in the secondary dropping process falls on the upper surface of the shock absorber 80. The shock absorbing member 80 is a cushioning member, and can absorb the shock when the article P is dropped on the upper surface of the shock absorbing member 80. After the packaging material P falls on the upper surface of the shock absorbing material 80, the pair of shock absorbing plates 70 and the shock absorbing material 80 move away from each other, the lower end of the cylindrical packaging material Ft is opened, and the packaged material P falls to the horizontal seal region 45 at the lower end of the cylindrical packaging material Ft.

  After the above steps, the packaging material feeding unit 3 rotates in the forward direction and feeds the cylindrical packaging material Ft downward to a predetermined position. Further, the cylindrical packaging material Ft sent downward is bonded to the package P by a lateral seal region to form a pillow-shaped packaging body, and the pillow-shaped packaging body is separated from the cylindrical packaging body Ft. Thereby, the sealing process for packaging the to-be-packaged product P to be input next can be performed while enclosing the to-be-packaged product P inside the pillow-shaped package.

According to the packaging method described above, the package P once decelerated in the deceleration process is further dropped onto the upper surface of the shock absorber 80 by the shock absorption process, thereby absorbing the impact when the package P is dropped. The possibility that the packaged object P and the cylindrical packaging material Ft due to the impact when the packaged object P is dropped can be effectively reduced.
(Modification of Embodiment 7)

  The vertical packaging machine according to the seventh embodiment described above is configured to send the cylindrical packaging material Ft downward by the packaging material feeding section 3 provided at the lower end of the bag-making cylinder 1 as in the first embodiment. did. Further, the packaging method is also configured to send back the cylindrical packaging material Ft upward by the packaging material feeding unit 3 in the relaxation process as in the first embodiment, but the aspect of the seventh embodiment is not specified above.

  As described in the second embodiment, the upper feed unit 30 and the lower feed unit 31 are provided above and below the opening, respectively, and the rotation direction of the upper feed unit 30 and the lower feed unit 31 is controlled, thereby forming a cylindrical shape. The packaging material Ft can be sent downward or a relaxation process can be performed.

  Another modification of the seventh embodiment is shown in FIGS. The vertical packaging machine shown in FIG. 17 includes a pressing device 23 in which a leaf spring 23A is connected to the front end of the power unit 23B as means for constricting the cylindrical packaging material Ft as in the vertical packaging machine shown in the third embodiment. Yes. The vertical packaging machine shown in FIG. 17 decelerates the article P to be packaged by the pressing device 23, and further receives the article P to be packaged by the impact absorbing plate 70 and the impact absorbing material 80 below the bag-making cylinder 1. Can absorb the impact of time.

  Further, the vertical packaging machine shown in FIG. 18 includes an injection nozzle 24 as means for constricting the cylindrical packaging material Ft as in the vertical packaging machine shown in the fourth embodiment. The vertical packaging machine shown in FIG. 18 decelerates the article P to be packaged by the injection nozzle 24, and further receives the article P to be packaged by the impact absorbing plate 70 and the impact absorbing material 80 below the bag-making cylinder 1, and drops. Can absorb the impact of time.

  The vertical packaging machine according to the seventh embodiment and its modification has been described above. According to the above vertical packaging machine, the cylindrical packaging material Ft is narrowed at the middle part of the bag-making cylinder 1, and the article to be packaged is further reduced below the bag-making cylinder 1 while the article to be packaged is decelerated by this narrowed part. By receiving P by the shock absorber 80, it is possible to absorb the shock at the time of dropping. Such a structure can reduce effectively the possibility that the to-be-packaged object P and the cylindrical packaging material will be damaged by the impact when the to-be-packaged object P falls.

  The vertical packaging machine according to the seventh embodiment described above is configured such that the impact absorbing plate 70 and the impact absorbing material 80 are provided only below the bag-making cylinder 1. It can also be provided in the middle part of the tube 1. That is, by providing the impact absorbing means on the side surface of the opening 10 of the bag-making cylinder 1, it is possible to receive an object to be packaged even at an intermediate portion of the bag-making cylinder 1. Alternatively, this shock absorbing means can be used as the narrowing means described in the first to sixth embodiments. Or you may provide the impact-absorbing material 80 in the member contact | abutted to the cylindrical packaging material Ft of the press apparatuses 20 and 23 shown in Embodiment 1 or Embodiment 3. FIG.

  The vertical packaging machine of the present invention can reduce the drop speed of the article to be packaged and reduce the impact at the time of dropping. By reducing the impact at the time of dropping, it can be used as a vertical packaging machine that effectively reduces the risk of damage or deformation of the packaged item.

P: Packaged material Fw: Band-shaped packaging material Ft ... Cylindrical packaging material Fp ... Pillow-shaped packaging material 1 ... Bag-making cylinder 2 ... Former 3 ... Packaging material feeding part 3A ... Rotating part
3B ... Power unit 4 ... Vertical sealer 4a ... Vertical seal block with heater
4b ... Vertical seal block 5 ... Horizontal sealer 5a ... Upper heater block
5b ... Upper seal block
5x ... Lower heater block
5y ... Lower seal block 6 ... Fastener mounting part 10 ... Opening part 11 ... Guide 12 ... Window part 14 ... Seal guide 16 ... Loading port 20 ... Pressing device 20A ... Pressing part
20B ... Power unit 23 ... Pressing device 23A ... Plate spring
23B ... Power unit 24 ... Injection nozzle 26 ... Injection nozzle 28 ... Injection nozzle 30 ... Upper feed unit 30A ... Upper rotation unit
30B ... Upper power unit 31 ... Lower feed unit 31A ... Lower rotation unit
31B ... Lower power part 35 ... Cutter 40 ... Narrow part 44 ... Vertical seal area 45 ... Horizontal seal area 54 ... Inner seal guide 55 ... Outer seal guide 70 ... Shock absorber 80 ... Shock absorber 101 ... Bag making cylinder 104 ... Vertical sealer 105 ... Horizontal sealer

Claims (14)

A cylindrical shape provided in the vertical direction, in which a cylindrical packaging material is guided downward along the outer surface of the cylindrical packaging material, and the packaged material introduced from above the cylinder is closed at the lower end. A vertical packaging machine comprising a bag-making cylinder filled in the packaging material,
A first constriction means for constricting the cylindrical packaging material from the outside to the inside on the outside of the bag-making cylinder and on the side of the intermediate portion;
The bag-making cylinder is provided with an opening portion through which the first narrowing means passes from the outside toward the inside, in an intermediate portion of a side surface,
Below the opening, provided with a lower feeding portion having a rotating portion that sandwiches the cylindrical packaging material between the bag-making cylinder and sends the cylindrical packaging material downward,
The lower feed part is provided so as to loosen the cylindrical packaging material in the middle part of the bag-making cylinder by controlling the rotation of the rotating part,
A vertical packaging machine characterized in that an article to be packaged is brought into contact with the narrowed portion inside the bag-making cylinder and decelerates or temporarily stops. The vertical packaging machine according to claim 1, wherein the first narrowing means is
A pressing portion that contacts and presses the cylindrical packaging material;
A power unit that moves the pressing part in a direction approaching and separating from the cylindrical packaging material;
A vertical wrapping machine characterized by comprising: The vertical packaging machine according to claim 1 or 2, wherein the first narrowing means is
When the article to be packaged passes through the inside of the bag-making cylinder downward, the article to be packaged is pushed outward together with the cylindrical packaging material, and the packaging material is again narrowed after passing the article to be packaged. A vertical packaging machine characterized by being made. The vertical packaging machine according to any one of claims 1 to 3 , further comprising:
Above the opening of the bag-making cylinder, provided with an upper feeding part having a rotating part that sandwiches the cylindrical packaging material between the bag-making cylinder and feeds the cylindrical packaging material downward,
The lower feeding part stops the rotating part, thereby making the cylindrical packaging material stationary at the position of the rotating part of the lower feeding part,
The upper wrapping unit is provided so that the cylindrical wrapping material can be loosened at an intermediate portion of the bag-making cylinder by rotating the rotating unit. The vertical packaging machine according to any one of claims 1 to 4 , wherein a strip-shaped packaging material is supplied to the bag-making cylinder,
A vertical sealer that forms a cylindrical packaging material by bonding both side edges of the belt-shaped packaging material on the outer surface of the bag-making cylinder;
A seal guide that abuts a side edge of the strip-shaped packaging material on the side surface between either or both of the vertical sealer and the bag making cylinder, or an outer side surface of the vertical sealer;
A vertical packaging machine comprising: The vertical packaging machine according to any one of claims 1 to 5 , further comprising:
A side of the bag-making cylinder and outside of the cylindrical packaging material, comprising a guide that approaches and covers the opening,
The vertical wrapping machine according to claim 1, wherein the guide includes a window portion through which the first narrowing means is passed in an intermediate portion. The vertical packaging machine according to any one of claims 1 to 6 , further comprising:
A vertical packaging machine comprising second constriction means on a side surface of the opening. The vertical packaging machine according to any one of claims 1 to 7 , further comprising:
A vertical packaging machine comprising third constriction means below the bag-making cylinder. The vertical packaging machine according to any one of claims 1 to 8 , further comprising:
A vertical wrapping machine comprising an impact absorbing member on an upper surface of the bag-making cylinder and having an impact absorbing means for constricting the cylindrical packaging material. A belt-shaped packaging material is guided to the outer periphery of the bag-making cylinder and bonded at both side edges of the belt-shaped packaging material to form a cylindrical packaging material. A packaging method for filling a packaged object inside,
A sealing step of closing the cylindrical packaging material below the lower end of the bag-making cylinder;
A relaxation process for loosening the tubular packaging material;
A narrowing step of narrowing at an intermediate portion of the bag-making cylinder so that the inner surface of the cylindrical packaging material closed in the sealing step approaches,
A primary dropping step of dropping an article to be packaged from above the bag-making cylinder to a narrowed portion formed in the narrowing step;
A decelerating step of decelerating or temporarily stopping the article to be wrapped that has been dropped in the primary dropping step, in contact with the narrowed portion;
A secondary dropping step of opening the narrowed portion and dropping the packaging material decelerated in the deceleration step to the lower end of the cylindrical packaging material;
A packaging method comprising: The packaging method according to claim 10 ,
The said relaxation process loosens a cylindrical packaging material by sending a cylindrical packaging material upwards, The packaging method characterized by the above-mentioned. The packaging method according to claim 10 or 11 ,
The said loosening process loosens a cylindrical packaging material by sending a cylindrical packaging material below, The packaging method characterized by the above-mentioned. The packaging method according to claim 10 ,
The bag-making cylinder includes an upper feeding portion above the opening, and a lower feeding portion below the opening,
In the relaxing step, the cylindrical packaging material feeds the upper feed portion downward while stopping the lower feed portion. A packaging method according to any one of claims 10 to 13 ,
A packaging method comprising an impact absorbing step of receiving an article to be packaged falling by a secondary dropping process by an impact absorbing means and then dropping the packaged article to the lower end of the cylindrical packaging material.

Images