JP2019199283A - Filling packaging machine - Google Patents

Abstract

To provide a filling packaging machine which can input with high speed inner bags formed by 3-side sealing into outer bags formed by 3-side sealing.SOLUTION: A filling packaging machine 10 includes an inner bag packaging machine 12 and an outer bag packaging machine 14. The inner bag packaging machine 12 includes a product filling machine 18 which forms inner bags B1 from double-folded inner bag webs S1 and fills in products from above. The outer bag packaging machine 14 forms double-folded outer bag web S2 outer bags B2 and inputs inner bags B1 from above. The outer bag packaging machine 14 is provided downstream of the inner bag packaging machine, and includes multiple grippers that hold the inner bags B1, a link mechanism that transports the grippers following the outer bags B2, and a cam mechanism that moves the grippers up and down. The grippers descend following the outer bags B2 while holding the inner bags B1 that have been cut, and thereby the inner bags B1 are filled into the outer bags B2.SELECTED DRAWING: Figure 1

Description

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

  As products such as tea bags, a mesh-shaped inner bag filled with tea leaves or the like is individually packaged with an air-tight outer bag (Patent Document 1). In the filling and packaging apparatus described in Patent Document 1, the inner bag is sealed (side-sealed) by transporting a long inner bag packaging material folded in the longitudinal direction downward. The wrapping material is made into a cylindrical shape, and the long wrapping material for the inner bag made into a cylindrical shape is laterally sealed at a constant interval, and tea leaves are put in between and separated to form a tea bag. The tea bag that is separated and dropped is placed between the long packaging material for the outer bag that is intermittently conveyed in the horizontal direction in a folded state, and the upper and both sides of the outer bag packaging material are The tea bags are individually packaged by the outer bag by sealing and the both side seal portions are cut, and the tea leaves are double-packaged by the inner bag and the outer bag.

Japanese Patent No. 5230659

  However, in the configuration of Patent Document 1, since the conveyance direction of the inner bag and the outer bag is orthogonal, it is necessary to perform intermittent conveyance to properly insert the inner bag into the outer bag, and it is difficult to increase the processing capacity. is there.

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

  The filling and packaging machine according to the first aspect of the present invention includes an inner bag web conveying means for conveying the inner bag web, an inner bag bifolding 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 conveying direction, the product filling means for filling the product from above the folded inner bag web, and the product is filled. Further, an inner bag top sealing means for sealing the upper side of the inner bag web, an inner bag cutting means for cutting a side-sealed portion of the inner bag web, and an outer bag web conveyance for conveying the outer bag web. Means for folding the outer bag web in half, and the outer bag side sealing means for sealing the outer bag web folded in half at a predetermined interval in the conveying direction. And the outer bag wafer folded in half. An inner bag filling means for filling the inner bag cut from above, and an outer bag top sealing means for sealing the upper side of the outer bag web filled with the inner bag, the inner bag filling means comprising: A plurality of holding portions for holding the bag, holding portion transporting means for transporting the holding portion following the outer bag, and holding portion lifting / lowering means for raising and lowering the holding portion, The inner bag is transported while holding the inner bag before being cut by the bag cutting means, and the inner bag is filled into the outer bag by descending while following the outer bag after the inner bag is cut. Yes.

  The filling and packaging machine according to a second aspect of the present invention is the filling and packaging machine according to the first aspect, wherein the holding portion transporting means includes a pitch widening mechanism for widening the pitch of the holding portion, and the holding portion is an inner bag. The pitch is expanded so that the pitch becomes the same as that of the outer bag after cutting.

  According to a third aspect of the present invention, there is provided the filling and packaging machine according to the first or second aspect, wherein the outer bag packaging machine has the outer bag side sealing means and the inner bag filling means arranged around the rotating body. The inner bag web conveying means conveys the inner bag web before cutting in a tangential direction of the rotating body, and the inner bag cutting means is connected to a contact point between the inner bag web and the rotating body. It is characterized by having arranged.

  ADVANTAGE OF THE INVENTION According to this invention, the filling packaging machine which can be thrown into the outer bag shape | molded with the three-way seal at high speed can be provided.

It is a perspective view of the filling packaging machine which is one embodiment of the present invention. It is a top view of the filling packaging machine of FIG. It is a partial sectional side view of a product filling machine. It is the expanded view which looked at the operation | movement of the area from the side seal area of the inner bag filling machine to the first half of the injection | throwing-in area to the radial direction outer side. It is an enlarged view of section A3 (refer to Drawing 2) of Drawing 4. It is a partial sectional side view of an inner bag filling machine. The structure inside a gripper opening / closing mechanism is shown. It is a top view of a link mechanism. It is a figure which shows the movement around the contact 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 this embodiment includes an inner bag packaging machine 12 and an outer bag packaging machine 14. In the inner bag packaging machine 12, a long belt-like inner bag web (band film) S <b> 1 is fed from the inner bag feeding part 16 and supplied to a product filling machine (product filling means) 18. The inner bag web S1 is fed from an original fabric roll 16A installed in the inner bag feeding unit 16, is leveled by a guide roller 16B, and is folded in two along the longitudinal direction to the product filling machine 18. Supplied (inner bag folded means).

  The product filling machine 18 includes a rotating body 18A that rotates about a vertical axis, and the folded inner bag web S1 travels in synchronization with the rotation of the rotating body 18A along the outer peripheral edge of the rotating body 18A. The In the upstream section (side seal section) A1, the inner bag web S1 folded in half around the rotating body 18A is vertically sealed at regular intervals along the longitudinal direction (side seal). Is formed into a bag shape having an opening (inner bag side seal 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 side seals. The hopper 18B is lowered and inserted into 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 transferred from above into each inner bag B1. Is thrown in. When the filling is completed, the hopper 18B is raised and divided into a large number of inner bags B1 in the longitudinal direction by the side seals, and the inner bag web S1 into which the contents are charged is separated from the rotating body 18A and is passed through the guide rollers 20. It is sent out toward the outer bag packaging machine 14.

  The inner bag web S <b> 1 through the guide roller 20 is linearly fed toward the outer bag packaging machine 14 and passes through the preheating device 22 and the top seal device (inner bag top seal means) 24. The upper side, that is, the portion where the opening of each inner bag B <b> 1 is formed is preheated along the longitudinal direction, and the opening is completely sealed in the top seal device 24. Thereby, the contents put into each inner bag B1 formed in inner bag web S1 are sealed in inner bag B1.

  A cutter (inner bag cutting means) 26 is disposed at a position adjacent to the outer bag packaging machine 14 at the downstream end of the inner bag web S1. 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 put into the outer bag B2.

  In the outer bag packaging machine 14, a long belt-shaped outer bag web S <b> 2 is fed from the outer bag feeding unit 28 and supplied to an inner bag filling machine (inner bag filling means) 30. The outer bag web S2 is fed from an original fabric roll 28A installed in the outer bag feeding unit 28, leveled by a guide roller 28B, and folded in two along the longitudinal direction to the inner bag filling machine 30. And is supplied (outer bag folding means).

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

  The inner bag web S1 fed linearly toward the outer bag packaging machine 14 by the guide roller 20 is arranged so as to substantially coincide with one outer peripheral tangent of the rotating body 30A of the inner bag filling machine 30. The cutter 26 is disposed 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 periphery of the rotating body 30A, a hopper 30B that is inserted into the outer bag B2 and guides the inner bag B1 into the outer bag B2 and the cut inner bag B1 corresponding to each of the outer bags B2. Inner bag holding devices 32 (see FIG. 4, FIG. 6, and FIG. 7) that hold and put into the corresponding hopper 30B are arranged so as to be movable up and down.

  Each inner bag B1 cut by the cutter 26 and held by the inner bag holding device (holding part conveying means) 32 of the inner bag filling machine 30 is arranged in the upstream section (side section) in the downstream section (loading section) A4 as described later. Seal section) A3 is put into each of the outer bags B2 formed in A3 through the hopper 30B. When the hopper 30B is raised and retracted from the outer bag B2 after the inner bag B1 is charged, the direction of the outer bag web S2 is changed via the guide roller 34, and the preheating section 36, The upper opening is sealed through a top seal device (outer bag top seal means) 38, and the inner bag B1 is sealed in the outer bag B2. 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 a side sectional view of the product filling machine 18 shown in FIG.

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

  Side seal portion 184 is fixed seal bar 184A that stands upright from base plate 180, and a swing seal bar that is positioned outside fixed seal bar 184A and whose base end is pivotally supported on the outer periphery of base plate 180. 184B. The swing seal bar 184B can swing between a recumbent state with its tip directed radially outward and an upright state in which the swing seal bar 184B is erected upward and pressed against the fixed seal bar 184A. The rotation about the base end of the swing seal bar 184B is controlled by the engagement of 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. Is done.

  The inner bag web S1 travels while being pressed against the fixed seal bar 184A, and when the swinging seal bar 184B stands up and is pressed against the fixed seal bar 184A across the inner bag web S1, The overlapped inner bag web S1 is sandwiched and welded between the fixed seal bar 184A and the swing seal bar 184B, and a side seal is applied. In FIG. 3, the swing seal bar 184B in a recumbent state is shown on the left side, and the swing seal bar 184B in a standing state is shown on the right side.

  A hopper 18B is disposed above the side seal portion 184 and between the two side seal portions 184, respectively. Each of the hoppers 18B is supported by a hopper lifting mechanism 186. The hopper 18B is supported by the upper end of a lifting shaft 186A extending in the vertical direction of the hopper lifting mechanism 186. The elevating shaft 186A is supported so as to be movable up and down with respect to the base board 180, and moves up and down by engagement of a cam follower 186B and a cam 186C provided at the lower end of the elevating shaft 186A. FIG. 3 shows a state in which the hopper 18B is raised on the left side, and a state in which the hopper 18B is lowered on the right side and a tip thereof is inserted into the inner bag B1 of the inner bag web S1 formed by the side seal. Indicated.

  A tank 188 for storing contents to be filled in the inner bag B1 is disposed 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 put into the inner bag B1.

  Next, referring to FIGS. 4 and 5, the operation of putting the inner bag B1 into the outer bag B2 in the inner bag filling machine 30 will be described. FIG. 4 is a plan view of the operation from the side seal section (upstream section) A3 of the inner bag filling machine 30 to the first half of the charging section (downstream section) A4 as viewed radially outward. These are the enlarged views of section A4 of FIG.

  As shown in FIG. 4, hoppers 30B are sequentially inserted from above between the folded outer bag webs S2. In the side seal section (upstream section) A3, the hopper 30B is inserted between the outer bag web S2 from above along the rear edge side seal L of the hopper 30B inserted one before. Thereafter, the rear edge side of the newly inserted hopper 30B is side-sealed, and the next hopper 30B is similarly inserted between the outer bag webs 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 and sealed into the inner bag B1 from the tangential direction of the outer periphery of the inner bag filling machine 30. The web S1 is conveyed. The inner bag web S1 has a gripper (holding part) 32A of the inner bag holding device 32 in order that the upper part of each inner bag B1 is in front of the contact point P where the outer periphery of the inner bag filling machine 30 and the linear track of the inner bag web S1 contact. 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 P. At this time, the gripper 32A is protruded radially outward from the outer periphery of the inner bag filling machine 30 in order to hold the inner bags B1 moving along the tangential direction before the contact point P by a link mechanism described later. , Rotated to be parallel to the tangential direction.

  In addition, each gripper 32A has a pitch that matches the pitch D1 of the inner bag B1 formed on the inner bag web S1 after the inner bag B1 is held until the inner bag B1 is cut. Is matched to the pitch D2 of the outer bag B2 formed on the outer bag web S2, that is, the pitch of the hopper 30B. Thereafter, each gripper 32A is retracted inward in the radial direction, rotated in the direction along the outer periphery of the inner bag filling machine 30, and returned to the original position / orientation. That is, each gripper 32A moves along with the outer periphery 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 periphery 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 positioned immediately below and released. As a result, the inner bag B1 falls through the hopper 30B and is put into the outer bag B2 into which the hopper 30B is inserted.

  In addition, each hopper 30B is provided with a tube 30C of inert gas such as nitrogen gas in the outer bag B2, and while the hopper 30B is inserted in the outer bag B2, nitrogen gas is introduced into the outer bag B2. inject. The hopper 30B is raised before the exterior film S2 reaches the guide roller 34, and is extracted from the outer bag B2. Thereafter, the hopper 30B and the gripper 32A are moved along the outer periphery of the inner bag filling machine 30 and repeat the same operation when reaching the point of contact P described above.

  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 rotation shaft 300A and a rotation portion 302 that rotates around the rotation shaft 300A via a bearing 301. The rotating part 302 includes a base board 308 on which a hopper lifting mechanism 306 for holding the side seal part 304 and the hopper 30B is disposed along the outer periphery, and a holding device support part 310 for supporting the inner bag holding device 32.

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

  The swing seal bar 304B is swingable between a recumbent state with its tip directed radially outward and an upright state in which it is upright and pressed against the fixed seal bar 304A. The rotation about the base end portion of the swing seal bar 304B is controlled by the engagement of 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. Is done.

  The outer bag web S2 is run while being pressed against the fixed seal bar 304A, and when the swinging seal bar 304B stands up and is pressed against the fixed seal bar 304A across the outer bag web S2, the outer bag web S2 is folded in half. The overlapped outer bag web S2 is sandwiched and welded between the fixed seal bar 304A and the swinging seal bar 304B, and a side seal is applied. FIG. 6 shows the swing seal bar 304B in a recumbent state.

  The hopper 30B is disposed above the side seal portion 304 and between the two side seal portions 304, respectively. The hoppers 30 </ b> B are each supported by a hopper lifting mechanism 306. The hopper 30B is supported by the upper end of a lifting shaft 306A extending in the vertical direction of the hopper lifting mechanism 306. The elevating shaft 306A is supported so as to be movable up and down with respect to the base board 308, and moves up and down by engagement of a cam follower 306B and a cam 306C provided at the lower end of the elevating shaft 306A. FIG. 6 shows a state where the hopper 30B is lowered and the tip thereof is inserted into the outer bag B2 formed on the outer bag web S2.

  The inner bag holding device 32 is disposed above each hopper 30B and supported by the holding device support portion 310. The inner bag holding device 32 includes a gripper opening / closing mechanism 320 that opens and closes the gripper 32A, and the gripper opening / closing mechanism 320 is attached to a lower end of a slide shaft 322 that extends vertically. The slide shaft 322 can be moved up and down with respect to the block 324, and the block 324 is supported by a link box 326 that houses a link mechanism (pitch expanding mechanism) 42 described later and is held by the holding device support unit 310. The link mechanism 42 is driven by the engagement of three cam followers 42A, 42B, 42C connected to the link mechanism 42 and cam grooves 42D, 42E, 42F provided along the entire circumference in the fixed portion 300, Block 324 controls the position and orientation of the slide shaft 322.

  For example, a cam follower 322A is provided near the upper end of the slide shaft 322, and the cam follower 322A is engaged with a gripper lifting cam 300B provided along the outer periphery of the fixed portion 300. That is, the slide shaft 322 moves up and down with respect to the block 324 when the rotating unit 302 is rotated and the cam follower 322A moves along the shape of the gripper lifting cam 300B (holding unit lifting and lowering means).

  The slide shaft 322 has a hollow structure, and a lift shaft 328 for opening and closing the gripper 32A is inserted through the slide shaft 322. 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 fixed 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 lifting shaft 328 is connected to a gripper opening / closing mechanism 320 as will be described later, and the opening / closing of the gripper 32A is operated by the vertical movement of the lifting shaft 328.

  With reference to FIG. 7, the opening and closing operation of the gripper 32A will be described. FIG. 7 shows an 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 viewed from the inside in the radial direction of the inner bag filling machine 30, and FIG. 7B is a view of the 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 a cover 320 </ b> A, and the cover 320 </ b> A is fixed to the lower end portion of the slide shaft 322. A bush 322 </ b> B 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 portion of the slide shaft 322. A base member 328B is fixed to the lower end of the lifting shaft 328, and a guide rod 328C parallel to the lifting shaft 328 is provided on the base member 328B. The guide rod 328C is inserted through a bush 328E into a bore 328D provided integrally with the cover 320A, and guides the elevation of the base member 328B by the elevation shaft 328.

  An opening / closing cam 328F protruding downward is provided below 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 fixed horizontally to the cover 320A, and are biased in a closing direction by a biasing member (not shown). Cam followers 320F and 320G are provided at the end portions (upper end portions) of the base portions of the gripper pieces 320B and 320C, respectively.

  The opening / closing cam 328F is inserted between the cam followers 320F and 320G. When the base member 328B is lowered by the elevating shaft 328, the cam followers 320F and 320G are pushed and spread against the urging force of the urging member. The pieces 320B and 320C are opened. When the elevating shaft 328 is raised from this state, the base member 328B is raised, the cam followers 320F and 320G are approached 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. FIG. 8 is a plan view of one link mechanism 42, and FIG. 9 is a diagram illustrating 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 rotational direction. The block 324 includes a first link 421, a second link 422, and a third link 423. Each of the links 421, 422, and 423 includes a pair of first and second levers (421A, 421B), (422A, 422B), and (423A, 423B). One ends of the first levers 421A, 422A, and 423A of the links 421, 422, and 423 are rotatably supported on the casing of the link mechanism 42 by 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 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 ends of the first levers 421A, 422A, and 423A and the other ends of the second levers 421B, 422B, and 423B are rotatably connected by shafts 421E, 422E, and 423E that can move in a horizontal plane, respectively. In FIG. 8, a 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 operation levers 425, 426, and 427, respectively (see FIGS. 6 and 9), and cam followers 42A and 42B are provided at the tips of the operation levers 425, 426, and 427, respectively. , 42C are provided (see FIGS. 6 and 9). When the cam followers 42A, 42B, and 42C move along the cam grooves 42D, 42E, and 42F, respectively, along with the rotation of the rotating unit 302, the fixed shafts 421C, 422C, and 423C are rotated, and the first link 421 and the second link 421C are rotated. Each of the link 422 and the third link 423 is driven.

  By rotation of the fixed shafts 421C and 422C, the block 324, that is, the reference point Q is moved forward and backward mainly in the radial direction (arrow A) of the rotating body 302, and by rotation of the fixed shaft 423C, the radial direction (tangential direction of the block 324, that is, the gripper 32A). ) 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 with a solid line and a two-dot chain line). In FIG. 9, an arrow C indicates the traveling position and traveling direction of the inner bag web S <b> 1, and an arrow D indicates the rotational direction of the rotating body 302. As shown in FIG. 9, the link mechanism 42 at the position (a) moves the block 324 radially outward so that the corresponding gripper 32A can grip the inner bag web S1 conveyed linearly in the direction of arrow C. And turn it counterclockwise.

  The grippers 32A connected to the link mechanism 42 at the positions (b) and (c) respectively hold the inner bag B1 of the inner bag web S1 at the pitch D1 and follow the direction of the arrow C without changing the direction thereof. 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 orientation. 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. 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 are maintained by the link mechanism 42 until the gripper 32A reaches the position (a) again.

  The gripper 32A holding the inner bag B1 is lowered while following the hopper 30B inserted into the outer bag B2 on the downstream side of the position (d). 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 the position. Thereafter, the gripper 32A is raised to the original height together with the hopper 30B, and is moved toward the position (a) along with the rotation of the rotating body 302.

  As described above, according to the present embodiment, since a section in which the inner bag and the inner bag holding device (gripper) of the inner bag filling machine are run in parallel can be provided, the product filling machine is changed to the inner bag filling machine. The inner bag can be delivered continuously and at high speed. Thereby, an inner bag can be thrown into an outer bag at high speed.

  In the present embodiment, the product filling machine and the inner bag filling machine are both rotary circulation type having a circular shape, but the section in which the inner bag and the inner bag holding part of the inner bag filling machine run side by side. If it is a circulation type provided with, it is not limited to a circle. Moreover, in this embodiment, although the gripper was applied to the inner bag holding device, the holding part may be an adsorption type.

  Examples of the contents filled in the inner bag include powdered soup stock and tea leaves. In this case, the inner bag web is made of a material that can be poured, and the outer bag web is made of a material having airtightness to seal the inner bag. However, the contents, the material of the inner bag web, and the outer bag web are not limited to these materials, and any material can be used as long as double packaging is performed using the inner bag and outer bag formed by a three-way seal. The invention can be applied.

DESCRIPTION OF SYMBOLS 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 seal device (Inner bag top seal means)
26 Cutter (Inner bag cutting means)
30 Inner bag filling machine (inner bag filling means)
32 Inner bag holding device (holding part conveying means)
32A gripper (holding part)
38 Top seal device (Outer bag top seal means)
40 cutter (outer bag cutting means)
42 Link mechanism (pitch expansion mechanism)
184, 304 Side seal portion 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 (band film)
S2 Outer bag web (band film)

Claims (3)

An inner bag web conveying means for conveying the inner bag web;
Inner bag bi-folding means for folding the inner bag web in half;
Inner bag side sealing means for sealing the side of the inner bag at a predetermined interval in the conveying direction with the inner bag web folded in two;
Product filling means for filling the product from above the folded inner bag web;
An inner bag top sealing means for sealing the upper part of the inner bag web filled with the product;
An inner bag cutting means for cutting the side-sealed portion of the inner bag web;
An outer bag web conveying means for conveying the outer bag web;
An outer bag folding means for folding the outer bag web in half;
An outer bag side sealing means for sealing the side of the outer bag at a predetermined interval in the conveying direction with the outer bag web folded in half;
An inner bag filling means for filling an inner bag cut from above the outer bag web folded in half;
An outer bag top sealing means for sealing the upper side of the outer bag web filled with the inner bag,
The inner bag filling unit includes a plurality of holding units that hold the inner bag, a holding unit conveying unit that conveys the holding unit following the outer bag, and a holding unit lifting unit that lifts and lowers the holding unit. ,
The holding unit conveys the inner bag before holding the inner bag before being cut by the inner bag cutting means, and lowers the inner bag by following the outer bag after the inner bag is cut. Filling and packaging machine characterized by filling in. The holding unit transporting unit includes a pitch widening mechanism that widens the pitch of the holding unit,
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 periphery,
The inner bag web conveying means conveys the inner bag web before cutting in a tangential direction of the rotating body, and the inner bag cutting means is disposed at a contact point between the inner bag web and the rotating body. The filling and packaging machine according to claim 1 or 2, characterized in that

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