JP7079653B2 - Filling and packaging machine - Google Patents

Description

The present invention relates to a filling and packaging machine in which an inner bag molded with a three-way seal is housed in an outer bag molded with a three-way seal.

As for products such as tea bags, it is known that a mesh-shaped inner bag filled with tea leaves or the like is individually wrapped in an airtight outer bag (Patent Document 1). In the filling and packaging device described in Patent Document 1, the inner bag is sealed (side-sealed) on the side surface of the long inner bag packaging material folded in half in the longitudinal direction while being conveyed downward. The wrapping material is made into a tubular shape, and the long wrapping material for the inner bag, which is made into a tubular shape, is horizontally sealed at regular intervals, and tea leaves are put in between them and separated to form a tea bag. The separated and dropped tea bag is placed below it between the long packaging materials for the outer bag, which are intermittently transported horizontally in a folded state, and the upper part and both sides of the packaging material for the outer bag are placed. The tea bag is individually wrapped by the outer bag by being sealed and the sealing portions on both sides are cut, and the tea leaves are double-wrapped by the inner bag and the outer bag.

Japanese Patent No. 5230659

However, in the configuration of Patent Document 1, since the transport directions of the inner bag and the outer bag are orthogonal to each other, it is necessary to perform intermittent transport in order to properly insert the inner bag into the outer bag, and it is difficult to increase the processing capacity. be.

An object of the present invention is to provide a filling and packaging machine capable of putting an inner bag molded with a three-way seal into an outer bag molded with a three-way seal at high speed.

The filling and packaging machine according to the first aspect of the present invention is folded in two, an inner bag web transporting means for transporting an inner bag web, and an inner bag bi-folding means for folding the inner bag web in half. The inner bag side sealing means for sealing the side of the inner bag at predetermined intervals in the transport direction, the product filling means for filling the product from above the folded inner bag web, and the product filling. Inner bag top sealing means for sealing the upper part of the inner bag web, inner bag cutting means for cutting the side-sealed portion of the inner bag web, and outer bag web transport for transporting the outer bag web. Means, an outer bag bi-folding means for folding the outer bag web in half, and an outer bag side sealing means for sealing the side of the outer bag at predetermined intervals in the transport direction. An inner bag filling means for filling the inner bag cut from above the folded outer bag web, and an outer bag top sealing means for sealing the upper part of the outer bag web filled with the inner bag. The inner bag filling means includes a plurality of holding portions for holding the inner bag, a holding portion transporting means for transporting the holding portion following the outer bag, and a holding portion elevating means for raising and lowering the holding portion. The holding portion holds and conveys the inner bag before being cut by the inner bag cutting means, and after the inner bag is cut, descends while following the outer bag. It is characterized by filling the inner bag with the outer bag.

In the filling and packaging machine according to the second aspect of the present invention, in the first invention, the holding portion transporting means includes a pitch expanding mechanism for expanding the pitch of the holding portion, and the holding portion is an inner bag. It is characterized by expanding the pitch so that the pitch is the same as that of the outer bag after the bag is cut.

The filling and packaging machine according to the third aspect of the present invention is a rotating body in which the outer bag packaging machine has the outer bag side sealing means and the inner bag filling means arranged around the same in the first or second invention. The inner bag web transporting means transports the inner bag web before cutting toward the tangential direction of the rotating body, and the inner bag cutting means at the contact point between the inner bag web and the rotating body. It is characterized by arranging.

According to the present invention, it is possible to provide a filling and packaging machine capable of putting an inner bag molded with a three-way seal into an outer bag molded with a three-way seal at high speed.

It is a perspective view of the filling packaging machine which is one Embodiment of this invention. It is a top view of the filling and packaging machine of FIG. It is a partial side sectional view of the product filling machine. It is a development view which looked at the operation of the section from the side seal section of the inner bag filling machine to the first half of the loading section in the radial direction. It is an enlarged view of the section A3 (see FIG. 2) of FIG. It is a partial side sectional view of the inner bag filling machine. The internal configuration of the gripper opening / closing mechanism is shown. It is a top view of the link mechanism. It is a figure which shows the movement around the contact point P of a link mechanism.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a filling and packaging machine according to an embodiment of the present invention, and FIG. 2 is a plan view.

The filling and packaging machine 10 of the present embodiment includes an inner bag packaging machine 12 and an outer bag packaging machine 14. In the inner bag packaging machine 12, a long strip-shaped inner bag web (belt-shaped film) S1 is fed out from the inner bag feeding portion 16 and supplied to the product filling machine (product filling means) 18. The inner bag web S1 is unwound from the original roll 16A installed in the inner bag feeding portion 16, is leveled by the guide roller 16B, and is folded in half upward along the longitudinal direction to the product filling machine 18. It is supplied (means for folding the inner bag in half).

The product filling machine 18 includes a rotating body 18A that rotates around a vertical axis, and the folded inner bag web S1 runs along the outer peripheral edge of the rotating body 18A in synchronization with the rotation of the rotating body 18A. To. The folded inner bag web S1 wound around the rotating body 18A is vertically sealed at regular intervals along the longitudinal direction (side seal) in the upstream section (side seal section) A1 and is upward. Is formed into a bag shape with an opening (inner bag side sealing means).

A hopper 18B is arranged above the outer periphery of the rotating body 18A corresponding to each inner bag B1 of the inner bag web S1 formed by the side seal. The hopper 18B is lowered and inserted inside the corresponding inner bag B1 in the downstream section (filling section) A2 following the upstream section A1, and the contents filled in the inner bag B1 are moved from above into each inner bag B1. Is thrown in. When the filling is completed, the hopper 18B is raised, divided into a large number of inner bags B1 in the longitudinal direction by the side seal, and the inner bag web S1 into which the contents are loaded is separated from the rotating body 18A and is separated from the rotating body 18A via the guide roller 20. It is sent out to the outer bag packaging machine 14.

The inner bag web S1 via the guide roller 20 is linearly sent out toward the outer bag packaging machine 14, passes through the preheating device 22 and the top sealing device (inner bag top sealing means) 24, and is folded in half. The upper side, that is, the portion where the opening of each inner bag B1 is formed is preheated along the longitudinal direction, and the opening is completely sealed in the top sealing device 24. As a result, the contents charged into each inner bag B1 formed in the inner bag web S1 are sealed in the inner bag B1.

At the downstream end of the inner bag web S1, a cutter (inner bag cutting means) 26 is arranged at a position adjacent to the outer bag packaging machine 14. Each inner bag B1 of the inner bag web S1 filled and sealed with the contents is cut at the side seal position by the cutter 26 at the downstream end, and separated into individual inner bags B1. As will be described later, each inner bag B1 separated from the inner bag web S1 is held by a mechanism provided in the outer bag packaging machine 14, and is charged into the outer bag B2, respectively.

In the outer bag packaging machine 14, the long strip-shaped outer bag web S2 is unwound from the outer bag feeding portion 28 and supplied to the inner bag filling machine (inner bag filling means) 30. The outer bag web S2 is unwound from the original roll 28A installed in the outer bag feeding portion 28, is leveled by the guide roller 28B, and is folded in half upward along the longitudinal direction to the inner bag filling machine 30. Is supplied (means for folding the outer bag in half).

The inner bag filling machine 30 includes a rotating body 30A that rotates around a vertical axis, and the folded outer bag web S2 travels along the outer peripheral edge of the rotating body 30A in synchronization with the rotation of the rotating body 30A. Will be done. The bi-folded outer bag web S2 wound around the rotating body 30A is vertically sealed at regular intervals along the longitudinal direction (side seal) in the upstream section (side seal section) A3, and is upward. Is formed into a bag shape with an opening (outer bag side sealing means).

The inner bag web S1 linearly sent out to the outer bag packaging machine 14 by the guide roller 20 is arranged so as to substantially coincide with one outer peripheral tangent line of the rotating body 30A of the inner bag filling machine 30. Further, the cutter 26 is arranged so as to cut the inner bag web S1 at a position substantially corresponding to the contact point P with the rotating body 30A. Above the outer circumference of the rotating body 30A, a hopper 30B, which is inserted into the outer bag B2 and guides the inner bag B1 into the outer bag B2, and a cut inner bag B1 are provided above the outer circumference of the rotating body 30A. Inner bag holding devices 32 (see FIGS. 4, 6, and 7) that are held and put into the corresponding hopper 30B are arranged so as to be able to move up and down.

Each inner bag B1 cut by the cutter 26 and held by the inner bag holding device (holding unit transporting means) 32 of the inner bag filling machine 30 is in the upstream section (side) in the downstream section (loading section) A4 as described later. Seal section) The hopper 30B is passed through each of the outer bags B2 formed in A3. After the inner bag B1 is put in, when the hopper 30B is raised and retracted from the outer bag B2, the direction of the outer bag web S2 is changed via the guide roller 34, and the preheating unit 36, like the inner bag web S1, The upper opening is sealed via the top sealing device (outer bag top sealing means) 38, and the inner bag B1 is sealed in the outer bag B2, respectively. The outer bag web S2 that has been sealed is cut at the side seal position by the cutter 40, and the individual packaging of the inner bag B1 by the outer bag B2 is completed.

Next, the configuration of the product filling machine 18 will be described in more detail with reference to the side sectional view of the product filling machine 18 of FIG.

The rotating body 18A of the product filling machine 18 includes a disk-shaped base plate 180, and is rotatably attached around a fixed shaft 182 via a bearing 181. The base plate 180 is rotated by a drive mechanism (not shown) in synchronization with the transfer speed of the inner bag web S1. Around the base plate 180, a plurality of side seal portions 184 on which the inner bag web S1 folded in half along the outer circumference thereof is hung are arranged along the outer circumference at regular intervals.

The side seal portion 184 is located on the outside of the fixed seal bar 184A that stands upright from the base plate 180 and the fixed seal bar 184A, and the base end portion thereof is pivotally supported on the outer peripheral edge of the base plate 180. It is equipped with 184B. The rocking seal bar 184B can swing between a lying state in which the tip thereof is directed outward in the radial direction and an upright state in which the tip of the rocking seal bar 184B stands upright and is pressed against the fixed seal bar 184A. The rotation around the base end of the swing seal bar 184B is controlled by the engagement between the cam follower 184D provided at the tip of the rotation lever 184E for rotating the swing seal bar 184B and the cam groove 184C. Will be done.

The inner bag web S1 runs in a state of being pressed against the fixed seal bar 184A, and when the rocking seal bar 184B stands up and is pressed against the fixed seal bar 184A across the inner bag web S1, it is folded in half. The stacked inner bag web S1 is sandwiched and welded between the fixed seal bar 184A and the swing seal bar 184B, and side seals are applied. In FIG. 3, the rocking seal bar 184B in the lying state is shown on the left side, and the rocking seal bar 184B in the standing state is shown on the right side.

A hopper 18B is arranged above the side seal portion 184 and between the two side seal portions 184. Each hopper 18B is supported by a hopper elevating mechanism 186. The hopper 18B is supported by the upper end of the elevating shaft 186A extending in the vertical direction of the hopper elevating mechanism 186. The elevating shaft 186A is supported ascending / descending with respect to the base plate 180, and elevates / elevates by engaging the cam follower 186B provided at the lower end of the elevating shaft 186A with the cam 186C. FIG. 3 shows a state in which the hopper 18B is raised on the left side, a state in which the hopper 18B is lowered on the right side, and a state in which the tip thereof is inserted into the inner bag B1 of the inner bag web S1 formed by the side seal. Shown.

A tank 188 for storing the contents to be filled in the inner bag B1 is arranged above the rotating body 18A, and a filling nozzle for guiding the contents in the tank 188 to the hopper 18B above each hopper 18B. 188A is provided. In the filling section A2, the contents in the tank 188 fall through the filling nozzle 188A and the hopper 18B and are charged into the inner bag B1.

Next, with reference to FIGS. 4 and 5, the operation of charging the inner bag B1 into the outer bag B2 in the inner bag filling machine 30 will be described. FIG. 4 shows the operation of the section from the side seal section (upstream section) A3 of the inner bag filling machine 30 to the first half of the loading section (downstream section) A4, which is expanded in a plane with the outward view in the radial direction. Is an enlarged view of the section A4 of FIG.

As shown in FIG. 4, the hopper 30B is sequentially inserted between the two-folded outer bag webs S2 from above. In the side seal section (upstream section) A3, the hopper 30B is inserted between the outer bag web S2 from above along the trailing edge side side seal L of the hopper 30B inserted immediately before. After that, the trailing edge side of the newly inserted hopper 30B is side-sealed, and the next hopper 30B is similarly inserted between the outer bag web S2 along the side seal L.

Above the outer bag web S2 into which the hopper 30B is inserted and divided into individual outer bags B2 by the side seal L, the inner bag is divided into inner bags B1 from the tangential direction of the outer circumference of the inner bag filling machine 30 and sealed. The web S1 is transported. In the inner bag web S1, the upper part of each inner bag B1 is sequentially the gripper (holding portion) 32A of the inner bag holding device 32 in front of the contact point P where the outer circumference of the inner bag filling machine 30 and the linear trajectory of the inner bag web S1 are in contact with each other. The outer bag S1 at the tip is cut from the inner bag web S1 by the cutter 26 in the vicinity of the contact point P. At this time, the gripper 32A is projected radially outward from the outer periphery of the inner bag filling machine 30 in order to hold the inner bag B1 moving along the tangential direction in front of the contact P by the link mechanism described later. , Rotated so that it is parallel to the tangential direction.

Further, from the time when the inner bag B1 is held until the inner bag B1 is cut, each gripper 32A has a pitch matched to the pitch D1 of the inner bag B1 formed on the inner bag web S1, but after cutting. Is adjusted to the pitch D2 of the outer bag B2 formed on the outer bag web S2, that is, the pitch of the hopper 30B. After that, each gripper 32A is retracted inward in the radial direction and is rotated in a direction along the outer circumference of the inner bag filling machine 30 to be returned to the original position / orientation. That is, each gripper 32A moves along the outer circumference of the inner bag filling machine 30 together with the hopper 30B, that is, the outer bag B2.

Each gripper 32A that has started to move along the outer circumference of the inner bag filling machine 30 is lowered, and at least a part of the inner bag B1 to be held is inserted into the hopper 30B located directly below and released. As a result, the inner bag B1 falls through the hopper 30B and is thrown into the outer bag B2 into which the hopper 30B is inserted.

Further, each hopper 30B is provided with a tube 30C in which an inert gas such as nitrogen gas is introduced into the outer bag B2, and while the hopper 30B is inserted into the outer bag B2, nitrogen gas is introduced into the outer bag B2. inject. The hopper 30B is raised and pulled out from the outer bag B2 before the exterior film S2 reaches the guide roller 34. After that, the hopper 30B and the gripper 32A are moved along the outer circumference of the inner bag filling machine 30, and repeat the same operation when reaching the front of the above-mentioned contact P.

FIG. 6 is a partial side sectional view of the inner bag filling machine 30 of the present embodiment. The inner bag filling machine 30 includes a fixed portion 300 including a rotating shaft 300A, and a rotating portion 302 that rotates around the rotating shaft 300A via a bearing 301. The rotating portion 302 includes a base plate 308 in which a hopper elevating mechanism 306 for holding the side seal portion 304 and the hopper 30B is arranged along the outer periphery, and a holding device support portion 310 for supporting the inner bag holding device 32.

The rotating portion 302 is rotated by a drive mechanism (not shown) in synchronization with the transport speed of the outer bag web S2. Around the base plate 308, a plurality of side seal portions 304 on which the outer bag web S2 folded in half along the outer circumference thereof are hung are arranged along the outer circumference at regular intervals. The side seal portion 304 is located on the outside of the fixed seal bar 304A that stands upright from the base plate 308 and the fixed seal bar 304A, and the base end portion thereof is pivotally supported on the outer peripheral edge of the base plate 308. It is equipped with 304B.

The rocking seal bar 304B can swing between a lying state in which the tip thereof is directed outward in the radial direction and an upright state in which the tip of the rocking seal bar 304B stands upright and is pressed against the fixed seal bar 304A. The rotation around the base end of the swing seal bar 304B is controlled by the engagement between the cam follower 304D provided at the tip of the rotation lever 304E for rotating the swing seal bar 304B and the cam groove 304C. Will be done.

The outer bag web S2 travels in a state of being pressed against the fixed seal bar 304A, and when the rocking seal bar 304B stands up and is pressed against the fixed seal bar 304A across the outer bag web S2, it is folded in half. The stacked outer bag webs S2 are sandwiched and welded between the fixed seal bar 304A and the swing seal bar 304B, and side seals are applied. In FIG. 6, a rocking seal bar 304B in a lying state is shown.

A hopper 30B is arranged above the side seal portions 304 and between the two side seal portions 304, respectively. Each hopper 30B is supported by a hopper elevating mechanism 306. The hopper 30B is supported by the upper end of the elevating shaft 306A extending in the vertical direction of the hopper elevating mechanism 306. The elevating shaft 306A is supported ascending / descending with respect to the base plate 308, and elevates / elevates by engaging the cam follower 306B provided at the lower end of the elevating shaft 306A with the cam 306C. FIG. 6 shows a state in which the hopper 30B is lowered and its tip is inserted into the outer bag B2 formed on the outer bag web S2.

An inner bag holding device 32 is arranged above each hopper 30B and is supported by the holding device support portion 310. The inner bag holding device 32 includes a gripper opening / closing mechanism 320 for opening / closing the gripper 32A, and the gripper opening / closing mechanism 320 is attached to the lower end of a vertically extending slide shaft 322. The slide shaft 322 is movable up and down with respect to the block 324, and the block 324 is supported by a link box 326 which has a link mechanism (pitch expansion mechanism) 42 described later and holds it in the holding device support portion 310. The link mechanism 42 is driven by engagement between the three cam followers 42A, 42B, 42C connected to the link mechanism 42 and the cam grooves 42D, 42E, 42F provided along the entire circumference of the fixed portion 300. The position and orientation of the block 324, that is, the slide shaft 322, is controlled.

For example, the slide shaft 322 is provided with a cam follower 322A near the upper end thereof, and the cam follower 322A is engaged with a gripper elevating cam 300B provided along the outer circumference of the fixing portion 300. That is, the slide shaft 322 moves up and down with respect to the block 324 by rotating the rotating portion 302 and moving the cam follower 322A along the shape of the gripper elevating cam 300B (holding portion elevating means).

Further, the slide shaft 322 has a hollow structure, and an elevating shaft 328 for opening and closing the gripper 32A is inserted therein. A cam follower 328A is provided at the upper end of the elevating shaft 328, and is engaged with a gripper opening / closing cam 300c provided along the outer periphery of the fixing portion 300. That is, the elevating shaft 328 moves up and down in the slide shaft 322 by rotating the rotating portion 302 and moving the cam follower 328A along the shape of the gripper opening / closing cam 300c. The lower end of the elevating shaft 328 is connected to the gripper opening / closing mechanism 320 as described later, and the opening / closing of the gripper 32A is operated by the vertical movement of the elevating shaft 328.

The opening / closing operation of the gripper 32A will be described with reference to FIG. 7. FIG. 7 shows the internal configuration of the gripper opening / closing mechanism 320. FIG. 7A is a side view of the contents of the gripper opening / closing mechanism 320 as viewed from the radial inside of the inner bag filling machine 30, and FIG. 7B is a gripper opening / closing mechanism 320 from the direction shown in FIG. It is a side view which shows the contents.

The gripper opening / closing mechanism 320 is covered with the cover 320A, and the cover 320A is fixed to the lower end portion of the slide shaft 322. A bush 322B is interposed between the outer peripheral surface of the elevating shaft 328 and the inner peripheral surface of the slide shaft 322 at the lower end of the slide shaft 322. A base member 328B is fixed to the lower end of the elevating shaft 328, and a guide rod 328C parallel to the elevating shaft 328 is provided on the base member 328B. The guide rod 328C is inserted into the bore 328D integrally provided on the cover 320A via the bush 328E, and guides the raising and lowering of the base member 328B by the elevating shaft 328.

An opening / closing cam 328F projecting downward is provided on the lower side of the base member 328B, and the opening / closing cam 328F engages with a pair of gripper pieces 320B and 320C constituting the gripper 32A. The gripper pieces 320B and 320C are pivotally supported via a bush 320E around a rotating shaft 320D horizontally fixed to the cover 320A, and both are urged in a closed direction by an urging member (not shown). Cam followers 320F and 320G are provided at the base-side end (upper end) of the gripper pieces 320B and 320C, respectively.

The opening / closing cam 328F is inserted between the cam followers 320F and 320G, and when the base member 328B is lowered by the elevating shaft 328, the cam followers 320F and 320G are pushed out against the urging force of the urging member and gripped. Pieces 320B and 320C are opened. From this state, when the elevating shaft 328 is raised, the base member 328B is raised, the cam followers 320F and 320G are closer to each other by the urging force, and the grip pieces 320B and 320C are closed.

Next, the structure and operation of the link mechanism 42 in the block 324 will be described with reference to FIGS. 8 and 9. FIG. 8 is a plan view of one link mechanism 42, and FIG. 9 is a diagram showing the movement of the link mechanism 42 around the contact point P.

The slide shaft 322 is slidable in the upper and lower directions with respect to the block 324, but is configured to rotate in the rotation direction. The block 324 includes a first link 421, a second link 422, and a third link 423. Each link 421, 422, 423 is composed of a pair of first and second levers (421A, 421B), (422A, 422B), (423A, 423B), respectively. One ends of the first levers 421A, 422A, and 423A of the links 421, 422, and 423 are rotatably supported on the housing of the link mechanism 42 by the fixed shafts 421C, 422C, and 423C, respectively.

One end of the second lever 421B of the first link 421 and one end of the second lever 422B of the second link 422 are rotatably attached to the block 324 via the shafts 421D and 422D. On the other hand, one end of the second lever 423B of the third link 423 is pivotally supported by the second lever 422B of the second link 422 via the shaft 423D. Further, the other end of the first lever 421A, 422A, 423A and the other end of the second lever 421B, 422B, 423B are rotatably connected by shafts 421E, 422E, and 423E that can move in a horizontal plane, respectively. In FIG. 8, the point Q indicates a reference point corresponding to the center position of the gripper 32A.

The fixed shafts 421C, 422C, and 423C are integrally provided with operating levers 425, 426, and 427 (see FIGS. 6 and 9), and cam followers 42A and 42B are provided at the tips of the operating levers 425, 426, and 427, respectively. , 42C, respectively (see FIGS. 6 and 9). When the cam followers 42A, 42B, and 42C move along the cam grooves 42D, 42E, and 42F as the rotating portion 302 rotates, the fixed shafts 421C, 422C, and 423C are rotated, respectively, and the first link 421 and the second link 421 and the second. The link 422 and the third link 423 are driven, respectively.

The rotation of the fixed shafts 421C and 422C causes the block 324, that is, the reference point Q, to advance and retreat mainly in the radial direction (arrow A) of the rotating body 302, and the rotation of the fixed shaft 423C causes the block 324, that is, the gripper 32A to move in the radial direction (tangential direction). ) Is mainly adjusted (arrow B).

The plan view of FIG. 9 shows the arrangement of the four link mechanisms 42 in the vicinity of the contact point P (drawn alternately by a solid line and a two-dot chain line). In FIG. 9, the arrow C indicates the traveling position and the traveling direction of the inner bag web S1, and the arrow D indicates the rotation direction of the rotating body 302. As shown in FIG. 9, the link mechanism 42 at position (a) has the block 324 radially outward so that the corresponding gripper 32A can grip the inner bag web S1 that is linearly conveyed in the direction of arrow C. Push it out and rotate its direction counterclockwise.

The gripper 32A connected to the link mechanism 42 at the positions (b) and (c) grips the inner bag B1 of the inner bag web S1 at the pitch D1, respectively, and follows the arrow C direction without changing the direction thereof. And move linearly. That is, the link mechanism 42 at the positions (b) and (c) is driven so that the position and orientation of the gripper 32A are displaced in this way.

When the inner bag B1 is separated from the inner bag web S1 by the cutter 26, the link mechanism 42 returns the gripper 32A to the reference position and direction. That is, the pitch of the reference point Q is expanded to D2, and the gripper 32A is maintained at the outer peripheral position of the rotating body 302. Further, the orientation of the gripper 32A is maintained so that the inner bag B1 to be gripped is along the circumferential direction (tangential direction) of the rotating body 302. The position and orientation of the gripper 32A is maintained by the link mechanism 42 until the gripper 32A reaches the vicinity of the position (a) again.

The gripper 32A gripping the inner bag B1 is lowered while following the hopper 30B inserted in the outer bag B2 on the downstream side of the position (d), and when the inner bag B1 is released from the gripper 32A, the inner bag B1 is lowered. It is put into the outer bag B2 through the hopper 30B located at. After that, the gripper 32A is raised to the original height together with the hopper 30B, and is moved toward the position (a) with the rotation of the rotating body 302.

As described above, according to the present embodiment, it is possible to provide a section in which the inner bag and the inner bag holding device (gripper) of the inner bag filling machine are run in parallel, so that the product filling machine can be changed to the inner bag filling machine. The inner bag can be delivered continuously and at high speed. As a result, the inner bag can be put into the outer bag at high speed.

In the present embodiment, both the product filling machine and the inner bag filling machine are of the rotary circulation type showing a circular shape, but the section in which the inner bag and the inner bag holding portion of the inner bag filling machine run in parallel. If it is a circulation type provided with, it is not limited to a circular shape. Further, in the present embodiment, the gripper is applied to the inner bag holding device, but the holding portion may be a suction type.

Examples of the contents to be filled in the inner bag include powdered soup stock and tea leaves. In that case, the inner bag web is made of a material that can be poured out, and the outer bag web is made of a material having airtightness that seals the inner bag. However, the contents, the inner bag web, and the material of the outer bag web are not limited to these, and any book can be double-wrapped using the inner bag and the outer bag molded with a three-way seal. The invention can be applied.

10 Filling and packaging machine 12 Inner bag packaging machine 14 Outer bag packaging machine 18 Product filling machine (product filling means)
18B, 30B hopper 24 top sealing device (inner bag top sealing means)
26 Cutter (inner bag cutting means)
30 Inner bag filling machine (inner bag filling means)
32 Inner bag holding device (holding unit transporting means)
32A gripper (holding part)
38 Top sealing device (outer bag top sealing means)
40 cutter (outer bag cutting means)
42 Link mechanism (pitch expansion mechanism)
184, 304 Side seal part 302 Rotating body A1, A3 Upstream section (side seal section)
A2 downstream section (filling section)
A4 downstream section (input section)
B1 Inner bag B2 Outer bag S1 Inner bag Web (strip film)
S2 outer bag web (strip film)

Claims (3)

A web transporting means for the inner bag that transports the web for the inner bag,
The inner bag bi-folding means for folding the inner bag web in half,
An inner bag side sealing means that seals the side of the inner bag at predetermined intervals in the transport direction, and the inner bag side sealing means, which is folded in half.
Product filling means for filling products from above the folded inner bag web,
An inner bag top sealing means that seals the upper part of the inner bag web filled with the product, and
An inner bag cutting means for cutting the side-sealed portion of the inner bag web,
A web transporting means for outer bags that transports webs for outer bags,
The outer bag bi-folding means for folding the outer bag web in half,
An outer bag side sealing means that seals the side of the outer bag at predetermined intervals in the transport direction, and the outer bag side sealing means, which is folded in half.
An inner bag filling means for filling an inner bag cut from above the folded outer bag web, and an inner bag filling means.
The outer bag top sealing means for sealing the upper part of the outer bag web filled with the inner bag is provided.
The inner bag filling means has a plurality of holding portions for holding the inner bag, a holding portion transporting means for transporting the holding portion following the outer bag, and a holding portion elevating means for raising and lowering the holding portion. ,
The holding portion transports the inner bag while holding it before it is cut by the inner bag cutting means, and after the inner bag is cut, lowers the inner bag while following the outer bag to lower the inner bag. A filling and packaging machine characterized by filling in. The holding portion transporting means includes a pitch expanding mechanism for expanding the pitch of the holding portion.
The filling and packaging machine according to claim 1, wherein the holding portion expands the pitch so that the pitch becomes the same as that of the outer bag after the inner bag is cut. The outer bag packaging machine includes a rotating body in which the outer bag side sealing means and the inner bag filling means are arranged around the outer bag packaging machine.
The inner bag web transporting means transports the inner bag web before cutting toward the tangential direction of the rotating body, and arranges the inner bag cutting means at the contact point between the inner bag web and the rotating body. The filling and packaging machine according to claim 1 or 2, wherein the filling and packaging machine is characterized by the above.

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