JP2024036106A - Article filling device - Google Patents

Abstract

To provide an article filling device easy to remove a former tube.SOLUTION: An article filling device 100 has a former tube 12, a funnel tube 22, and an auger screw 23. The former tube 12 is wound with a packaging material F on an outer peripheral surface 12s thereof. The funnel tube 22 is inserted inside the former tube 12. The auger screw 23 transfers a packaging object A inside the funnel tube 22. The funnel tube 22 is inserted into the former tube 12 in such a way that an outer peripheral surface 22s is exposed at a part above an upper end 12u of the former tube 12. The funnel tube 22 has a protruded part 22p protruded from the exposed outer peripheral part 22s. The protruded part 22p abuts on the upper end 12u of the former tube 12 and restricts downward movement of the funnel tube 22.SELECTED DRAWING: Figure 1

Description

The present invention relates to an article filling device.

Patent Document 1 (Japanese Unexamined Patent Publication No. 2008-127057) discloses a cylindrical former tube (bag-making tube) for forming a sheet-like packaging material wrapped around the outer circumferential surface into a cylinder, and a bag-making tube that is inserted into the former tube and inside the former tube. A funnel tube containing an auger screw (auger shaft), an inverted cone-shaped hopper installed at the upper end of the funnel tube, and a horizontal seal that seals the cylindrical packaging material in the width direction. An article filling device having a mechanism is disclosed.

The auger screw of this article filling device conveys the powder and granules supplied to the hopper down the funnel tube. The powder and granules transported below the funnel tube fall from the opening at the lower end of the funnel tube into the cylindrical packaging material formed by the former tube. The packaging material filled with the fallen powder is sealed by the horizontal sealing mechanism and becomes a packaging body.

In this article filling device, when removing the former tube from the casing, it is necessary to first remove the funnel tube from the former tube in order to prevent the funnel tube from falling out from inside the former tube. This operation is time-consuming because it is necessary to lift and hold the funnel tube above the former tube using relatively large equipment such as a crane while the former tube is removed from the casing.

An object of the present invention is to provide an article filling device in which a former tube can be easily removed.

The article filling device of the first aspect includes a sailor, a former tube, a funnel tube, and an auger screw. SERA forms sheet-like packaging material into a cylindrical shape. The former tube is a cylindrical member around which the packaging material is wrapped. The funnel tube is a cylindrical member inserted inside the former tube. The auger screw transports the packaged object A inside the funnel tube.

Both the former tube and the funnel tube are arranged with their central axes along the vertical direction. The funnel tube is inserted so that its outer peripheral surface is exposed above the upper end of the former tube. The funnel tube has a protrusion that protrudes from the exposed outer peripheral surface. The protrusion comes into contact with the upper end of the former tube and restricts downward movement of the funnel tube.

In this article filling device, the protrusion comes into contact with the upper end of the former tube to restrict downward movement of the funnel tube. Therefore, when the former tube is removed from the casing or the like, the funnel tube is prevented from falling out from inside the former tube. Therefore, according to the product filling device, there is no need to lift and hold the funnel tube above the former tube in the removal operation of the former tube, so that the former tube can be easily removed.

The article filling device according to the second aspect is the article filling device according to the first aspect, and further includes a support member that supports the former tube. The former tube supports the funnel tube with the protrusion in contact with the upper end of the former tube. Further, the former tube is removed from the support member integrally with the sailor, funnel tube, and auger screw with the protruding portion in contact with the upper end of the former tube.

In this article filling device, the former tube supports the funnel tube with the protruding part in contact with the upper end of the former tube, and the sailor, the funnel tube, and the auger with the protruding part in contact with the upper end of the former tube. It is removed from the support member together with the screw. As a result, in the former tube removal operation, the sailor, funnel tube, and auger screw are removed together with the former tube from the support member.

Therefore, according to the present product filling device, not only the former tube but also the sailor, funnel tube, and auger screw can be easily removed in the former tube removal operation.

The article filling device according to the third aspect is the article filling device according to the first aspect or the second aspect, and the protruding portion is a flange protruding from the outer peripheral surface.

According to the article filling device, the protrusion can stably restrict downward movement of the funnel tube over the entire circumference of the outer peripheral surface.

1 is a perspective view showing a schematic configuration of an article filling device 100. FIG. FIG. 3 is a front view showing a portion above the support member 50 of the article filling device 100. FIG. 3 is a plan view showing the part above the support member 50 of the article filling device 100. 7 is a block diagram of a control unit 70. FIG. FIG. 3 is a front view illustrating a removal operation of the former tube 12. FIG. 3 is a plan view illustrating a removal operation of the former tube 12. FIG. 7 is a front view illustrating a removal operation of the former tube 12 in the article filling apparatus 100 according to Modification A.

(1) Overall Overview The article filling device 100 packages the packaged article A, which is a powder or granular material, into a bag B formed by the bag making unit 10 using a packaging material F. The packaging material F is a film made from resin. The article filling device 100 includes a bag making unit 10, a filling unit 20, a vertical sealing mechanism 30, a horizontal sealing mechanism 40, a support member 50, and a control section 60. FIG. 1 is a perspective view showing a schematic configuration of an article filling device 100. FIG. 2 is a front view showing the part above the support member 50 of the article filling device 100. FIG. 3 is a plan view showing the part above the support member 50 of the article filling device 100. FIG. 4 is a block diagram of the control section 60.

In FIG. 1, for convenience, a part of the cylindrical packaging material Fm (described later) is shown transparent. In FIG. 3, for convenience, the chute 21 (described later) is not shown. In the following description, up-down, left-right, front-back directions are defined as indicated by arrows in each figure. In FIGS. 2 and 3, the packaging material F is not shown.

(2) Detailed configuration (2-1) Bag-making unit The bag-making unit 10 forms a sheet-like packaging material F fed out from a roll by a packaging material supply section (not shown) into a cylindrical shape. The bag making unit 10 includes a sailor 11, a former tube 12, a pull-down mechanism 13, and a connecting member 14.

(2-1-1) Sailor Sailor 11 forms the sheet-like packaging material F into a cylindrical shape. More specifically, the sailor 11 is a plate-shaped member that guides the packaging material F along the surface toward the outer peripheral surface of the former tube 12. The sailor 11 has a U-shaped cut 11a into which the upper end 12u of the former tube 12 is inserted. In order to fold back the sheet-like packaging material F toward the former tube 12, the sailor 11 is formed into a shoulder shape that moves downward as it moves outward from the notch 11a. The sailor 11 has a cylindrical portion 11b extending downward from the end forming the notch 11a.

(2-1-2) Former tube The former tube 12 is a cylindrical member around which the packaging material F folded back by the sailor 11 is wound. The former tube 12 forms a sheet-like packaging material wrapped around the outer peripheral surface into a cylindrical shape. The former tube 12 is arranged so that the central axis 12c is along the up-down direction (vertical direction). The former tube 12 is inserted into the sailor 11 so that the upper end 12u is located above the cut 11a of the sailor 11.

The former tube 12 can support the funnel tube 22 via a protrusion 22p (all of which will be described later) of the funnel tube 22 included in the filling unit 20. Further, in the removal operation from the article filling device 100, the former tube 12 is removed from the support member 50 together with the sailor 11, the funnel tube 22 of the filling unit 20, and the auger screw 23 (described later). Details of the removal work will be described later.

In this embodiment, the former tube 12 is formed with a spreader 12e extending downward from the lower end 12d. The spreader 12e is a plate-like member provided to separate the packaging material F wrapped around the outer peripheral surface of the former tube 12 from the outer peripheral surface. In this embodiment, the spreader 12e is a strip-shaped plate whose width becomes narrower toward the bottom. The spreader 12e is provided on both left and right sides of the lower end 12d of the former tube 12.

The outer peripheral diameter of the former tube 12 is formed to a size that allows it to be inserted into the notch 12a of the sailor 11 through a gap G1 of a predetermined size. The inner circumferential diameter of the former tube 12 is formed to be larger than the outer circumferential diameter of the funnel tube 22 so that the funnel tube 22 can be inserted inside through a gap G2 of a predetermined size. Although not limited to this, the inner diameter of the former tube 12 is, for example, about 83.7 mm.

(2-1-3) Pull-down mechanism The pull-down mechanism 13 is a mechanism that adsorbs the packaging material F wrapped around the outer peripheral surface of the former tube 12 and conveys it downward along the length direction (vertical direction) of the former tube 12. It is. The pull-down mechanism 13 is disposed below the sailor 11 on both left and right sides of the former tube 12. The pull-down mechanism 13 includes a pull-down belt 13a, a drive roller 13b, a driven roller 13c, and a first drive section 13d.

The pull-down belt 13a is a belt having an adsorption function. The pull-down belt 13a is stretched between a driving roller 13b and a driven roller 13c, which are arranged with a predetermined width apart in the vertical direction. When the first drive unit 13d drives the drive roller 13b and the driven roller 13c, the pull-down belt 13a conveys the packaging material F downward while rotating between the drive roller 13b and the driven roller 13c. The first drive section 13d is controlled by the control section 60.

(2-1-4) Connecting Member The connecting member 14 is a member that connects the sailor 11 and the former tube 12. The connecting member 14 includes a base member 14a, two columnar members 14b, and two brackets 14c.

The base member 14a is a plate-shaped member that supports the sailor 11. The base member 14a is arranged perpendicularly to the vertical direction. An opening into which the former tube 12 is inserted is formed approximately in the center of the base member 14a. The base member 14a supports the sailor 11 by coming into contact with the lower end of the cylindrical portion 11b from below, with the former tube 12 inserted into the opening of the base member 14a. The base member 14a has cutouts formed on both sides in the left-right direction into which bolts 51a for fixing the base member 14a to the support member 50 are inserted.

The columnar member 14b is a columnar member that supports the bracket 14c above the base member 14a. The columnar member 14b is arranged on the upper surface of the base member 14a so that its longitudinal direction runs along the up-down direction.

The bracket 14c is a member that supports the former tube 12. The bracket 14c has one end connected to the outer peripheral surface of the former tube 12 above the notch 12a of the sailor 11, and the other end connected to the upper end of the columnar member 14b.

(2-2) Filling Unit The filling unit 20 drops a predetermined amount of the object to be packaged A into the cylindrical packaging material Fm formed by the vertical sealing mechanism 30. The filling unit includes a chute 21, a funnel tube 22, an auger screw 23, and a second drive section 24.

(2-2-1) Chute The chute 21 is a plate-shaped member that receives the packaged articles A falling from the packaged article supply mechanism (not shown) installed above and guides them to the funnel tube 22 and the auger screw 23. be. The chute 21 is formed in the shape of a funnel whose inner diameter decreases from the top to the bottom. The chute 21 has an opening connected to the upper end 22u of the funnel tube 22 at the bottom.

(2-2-2) Funnel Tube The funnel tube 22 is a cylindrical member that guides the packaged object A supplied from the chute 21 to the cylindrical packaging material Fm. The funnel tube 22 is arranged so that the central axis 22c is along the vertical direction. The upper end 22u of the funnel tube 22 is detachably connected to the lower end of the chute 21.

The funnel tube 22 is formed longer than the former tube 12 and is inserted inside the former tube 12 with its central axis 22c overlapping the central axis 12c of the former tube 12. Further, the funnel tube 22 is inserted into the former tube 12 so that the outer peripheral surface 22s is exposed above the upper end 12u of the former tube 12. Although not limited to this, the outer circumferential diameter of the funnel tube 22 is smaller than the inner circumferential diameter of the former tube 12, for example, about 75 mm.

The funnel tube 22 has a protrusion 22p that protrudes from the outer peripheral surface 22s above the upper end 12u of the former tube 12. The protrusion 22p comes into contact with the upper end 12u of the former tube 12 to restrict downward movement of the funnel tube 22. In this embodiment, the protrusion 22p is a flange that protrudes from the outer circumferential surface 22s (in other words, an annular member that protrudes from the outer circumferential surface 22s).

(2-2-3) Auger screw The auger screw 23 transfers the packaged object A inside the funnel tube 22, and transfers the packaged object A from the opening 22o located at the lower end 22d of the funnel tube 22 to the cylindrical packaging material Fm every filling cycle. A predetermined amount of the object to be packaged A is dropped. The filling cycle is a cycle in which one bag B filled with a predetermined amount of the object to be packaged A is formed.
The auger screw 23 is a member having a spiral blade 23b formed around a rod-shaped auger shaft 23a. The auger screw 23 is housed inside the funnel tube 22 so that the auger shaft 23a is along the vertical direction. The auger shaft 23a is inserted inside the chute 21 and the funnel tube 22 so that the central axis 23c overlaps the central axis 22c of the funnel tube 22 and the central axis 12c of the former tube 12. The auger shaft 23a extends to near the top of the chute 21 and is connected to the second drive section 24.

The auger screw 23 rotates around a central axis 23c to transfer the packaged object A that has fallen into the chute 21 to the opening 22o of the funnel tube 22 through between the blades 23b.

(2-2-4) Second Drive Section The second drive section 24 rotationally drives the auger screw 23. The second drive section 24 is connected to the auger shaft 23a. The second drive section 24 is controlled by a control section 60. Although not limited to this, the second drive unit 24 is, for example, a servo motor.

(2-3) Vertical sealing mechanism The vertical sealing mechanism 30 keeps the edge of the cylindrical packaging material F wrapped around the outer peripheral surface of the former tube 12 at a constant rate along the length direction (vertical direction) of the former tube 12. While pressing it against the former tube 12 at a pressure of 100 mL, it is heated and bonded (sealed) to form a vertical seal. Thereby, the cylindrical packaging material F becomes a cylindrical packaging material Fm. The vertical seal mechanism 30 is disposed below the sailor 11 and on the front side of the former tube 12.

(2-4) Horizontal sealing mechanism The horizontal sealing mechanism 40 seals (laterally seals) the cylindrical packaging material Fm on which the packaged object A has fallen in the horizontal direction (in the present embodiment, the left-right direction). The upper and lower ends of bag B are sealed by forming . The lateral seal mechanism 40 is arranged below the former tube 12.

The lateral seal mechanism 40 has two seal jaws 41 and a third drive section 42. The seal jaw 41 has a heater and a cutter (both not shown) inside.

The third drive unit 42 drives the two seal jaws 41 to sandwich the cylindrical packaging material Fm from the front and rear directions at a predetermined timing. The sealing jaws 41 seal the sandwiched cylindrical packaging material Fm with a heater to form a horizontal seal portion S. Thereafter, the seal jaw 41 cuts the horizontal seal portion S in the horizontal direction with a cutter. Thereby, the bag B is separated from the cylindrical packaging material Fm.

Since the third drive unit 42 can be configured using a well-known servo motor and link mechanism, a detailed description of the structure will be omitted. The third drive section 42 is controlled by the control section 60.

(2-5) Support Member The support member 50 is a member that supports the former tube 12 with respect to the casing (not shown) of the article filling device 100. In this embodiment, the support member 50 supports the sailor 11 and the former tube 12 via the connection member 14. The support member 50 has two support plates 51 formed in the same shape.

The support plate 51 is a plate-shaped member arranged perpendicularly to the vertical direction. The support plate 51 supports the connecting member 14 from below on both left and right sides of the base member 14a. The base member 14a is formed with a bolt hole into which the bolt 51a is inserted.

(2-6) Control Unit The control unit 60 controls the first drive unit 13d, the second drive unit 24, and the third drive unit 42. The control section 60 is connected to the first drive section 13d, the second drive section 24, and the third drive section 42 so as to be able to transmit and receive control signals.

The control unit 60 controls the first drive unit 13d to cause the pull-down mechanism 13 to transport the packaging material F downward. In this embodiment, the pull-down mechanism 13 continuously transports the packaging material F downward at a constant speed.

The control unit 60 controls the second drive unit 24 to rotate the auger screw 23 for each filling cycle. Thereby, the auger screw 23 drops the packaged object A received by the chute 21 by a predetermined amount from the opening 22o located at the lower end 22d of the funnel tube 22 into the cylindrical packaging material Fm every filling cycle.

The control unit 60 controls the third drive unit 42 to cause the horizontal seal mechanism 40 to form one horizontal seal portion S for each filling cycle.

The control unit 60 is realized by a computer. The control unit 60 includes a control calculation device and a storage device (both not shown). A processor such as a CPU or a GPU can be used as the control calculation device. The control arithmetic device reads a program stored in the storage device, and performs predetermined image processing and arithmetic processing according to this program. Furthermore, the control calculation device can write calculation results to the storage device and read information stored in the storage device according to the program.

(3) Operation of the article filling device When the article filling device 100 is started, the control section 60 starts controlling the first drive section 13d, the second drive section 24, and the third drive section 42.

When the pull-down mechanism 13 is driven, the packaging material F is conveyed downward along the length direction of the former tube 12, and the packaging material F is supplied to the sailor 11 from the packaging material supply section. The packaging material F supplied from the packaging material supply section is guided along the surface of the sailor 11 and folded back at the cut 12a. The folded packaging material F is wound around the outer circumferential surface of the former tube 12 while passing through the gap G1 between the notch 12a and the outer circumferential surface of the former tube 12. The packaging material F wound around the outer circumferential surface of the former tube 12 is continuously conveyed downward by the pull-down mechanism 13, and a vertical seal is formed by the vertical sealing mechanism 30 to form a cylindrical packaging material Fm.

On the other hand, the auger screw 23 rotates by a predetermined number of revolutions N for each filling cycle. Thereby, the auger screw 23 drops the packaged object A received by the chute 21 by a predetermined amount from the opening 22o located at the lower end 22d of the funnel tube 22 above the horizontal seal portion S of the cylindrical packaging material Fm.

Furthermore, by driving the horizontal sealing mechanism 40, the two sealing jaws 41 sandwich the cylindrical packaging material Fm above the space filled with the packaged object A below the former tube 12 and the funnel tube 22, and seal the horizontal seal. do. As a result, the horizontal seal portion S, which will become the top of bag B and the bottom of the subsequent bag B, is newly formed. Thereafter, the two seal jaws 41 cut the formed lateral seal portion S in the lateral direction to separate the bag B.

(4) Former tube removal operation The former tube 12 is removed from the article filling device 100 in the following procedure. FIG. 5 is a front view illustrating the removal work of the former tube 12. FIG. 6 is a plan view illustrating the removal operation of the former tube 12. In FIG. 6, the chute 21 (described later) is not shown for convenience.

First, the funnel tube 22 is removed from the chute 21. As a result, the funnel tube 22 tries to move downward inside the former tube 12, but when the funnel tube 22 moves downward by a predetermined distance, the protrusion 22p comes into contact with the upper end 12u of the former tube 12. come into contact with This restricts the funnel tube 22 from moving downward (see FIG. 5). The former tube 12 supports the funnel tube 22 in a state where the protrusion 22p is in contact with the upper end of the former tube 12. At this time, the auger screw 23 also moves downward together with the funnel tube 22.

Next, the bolts 51a that fix the connecting member 14 to the supporting member 50 are removed, and the connecting member 14 is integrally aligned with the sailor 11, former tube 12, and auger screw 23 along the upper surface of the supporting member 50 (base member 14a along the upper surface of the support plate 51).

In this embodiment, after one (right side) of the two bolts 51a fixing the connecting member 14 is removed (or loosened) and the other (left side) is loosened, the connecting member 14 is attached to the sailor 11 and the former tube. 12 and the auger screw 23, and is rotated along the upper surface of the support member 50 around the other bolt 51a (see FIG. 6).

Next, the sailor 11, former tube 12, connecting member 14, and auger screw 23 are removed from the support member 50 and the casing. At this time, the former tube 12 is removed from the support member 50 together with the funnel tube 22 and the auger screw 23 with the protrusion 22p in contact with the upper end 12u of the former tube 12 (see FIG. 6).

Through the above procedure, the former tube 12 is removed from the article filling device 100.

After this, a separately prepared former tube 12 may be assembled in place of the removed former tube 12.

(5) Features (5-1)
The article filling device 100 includes a sailor 11, a former tube 12, a funnel tube 22, and an auger screw 23. The sailor 11 forms the sheet-like packaging material F into a cylindrical shape. The former tube 12 is a cylindrical member around which the packaging material F is wound around the outer peripheral surface 12s. The funnel tube 22 is a cylindrical member inserted inside the former tube 12. The auger screw 23 transports the packaged object A inside the funnel tube 22.

Both the former tube 12 and the funnel tube 22 are arranged so that the central axes 12c and 22c are along the vertical direction. The funnel tube 22 is inserted into the former tube 12 so that the outer peripheral surface 22s is exposed above the upper end 12u of the former tube 12. The funnel tube 22 has a protrusion 22p that protrudes from the exposed outer peripheral surface 22s. The protrusion 22p comes into contact with the upper end 12u of the former tube 12 to restrict downward movement of the funnel tube 22.

In the article filling device 100, the protrusion 22p comes into contact with the upper end 12u of the former tube 12 to restrict downward movement of the funnel tube 22. Therefore, when the former tube 12 is removed from the casing 60, the funnel tube 22 separated from the chute 21 is prevented from falling out from inside the former tube 12. Therefore, according to the article filling device 100, there is no need to lift and hold the funnel tube 22 above the former tube 12 in the removal operation of the former tube 12, so that the former tube 12 can be easily removed.

(5-2)
The article filling device 100 further includes a support member 50 that supports the former tube 12. The former tube 12 supports the funnel tube 22 with the protrusion 22p in contact with the upper end 12u of the former tube 12. Further, the former tube 12 is removed from the support member 50 together with the sailor 11, the funnel tube 22, and the auger screw 23 with the protrusion 22p in contact with the upper end 12u of the former tube 12.

In the article filling device 100, the former tube 12 supports the funnel tube 22 with the protrusion 22p in contact with the upper end 12u of the former tube 12, and supports the funnel tube 22 with the protrusion 22p in contact with the upper end 12u of the former tube 12. , the sailor 11, the funnel tube 22, and the auger screw 23 are removed from the support member 50 integrally. Thereby, in the removal work of the former tube 12, the sailor 11, the funnel tube 22, and the auger screw 23 are removed together with the former tube 12 from the support member 50.

Therefore, according to the article filling apparatus 100, not only the former tube 12 but also the sailor 11, the funnel tube 22, and the auger screw 23 can be easily removed in the removal operation of the former tube 12.

(5-3)
The protrusion 22p is a flange that protrudes from the outer peripheral surface 22s.

According to the article filling device 100, the protruding portion 22p can stably restrict downward movement of the funnel tube 22 over the entire circumference of the outer peripheral surface 22s.

(6) Modification (6-1) Modification A
The article filling device 100 according to Modification A includes an auxiliary support member 52. FIG. 7 is a front view illustrating a removal operation of the former tube 12 in the article filling apparatus 100 according to Modification A. In FIG. 7, the chute 21 (described later) is not shown for convenience.

The auxiliary support member 52 is used to expand the range in which the connection member 14 is supported during the removal work of the bag making unit 10 and the filling unit 20. The auxiliary support member 52 has a connecting portion 52a and a support plate 52b.

The connecting portion 52a is a member that connects and holds the support plate 52b to one of the support plates 51 of the support member 50. The connecting portion 52a connects the support plate 52b to the support plate 51 so that the upper surface of the support plate 52b is located in the same plane as the upper surface of the support plate 51 (so that they are flush with each other). The connecting portion 52a is configured such that the support plate 52b can be attached to and detached from one of the support plates 51.

The support plate 52b is a plate-like member that expands the range in which the base member 14a of the connecting member 14 is supported during the removal operation. The support plate 52b is formed in a shape that can support the base member 14a, which is rotated in the circumferential direction around one bolt 51a during the removal operation, from below at a position that does not overlap with the support plate 51. In this embodiment, as shown in FIG. 7, the support plate 52b is formed in a substantially band shape extending from the front edge of the one (right side) support plate 51 toward the approximate center of the front.

In the removal operation of the former tube 12 of the article filling apparatus 100 according to Modification A, first, the auxiliary support member 52 is connected to one of the support plates 51. After that, one of the two bolts 51a is removed (or loosened) and the other (left side) is loosened, and the connecting member 14 is integrated with the sailor 11, former tube 12, and auger screw 23, and the support member 50 is The other bolt 51a is rotated along the upper surface (see FIG. 7). At this time, since the auxiliary support member 52 is connected to the support plate 51, the base member 14a of the connection member 14 can rotate until it reaches the outside of the support plate 51.

In this way, by using the auxiliary support member 52, the sailor 11, former tube 12, connection member 14, and auger screw 23 can be moved (rotated) to the outside of the support plate 51. Therefore, according to the article filling device 100 according to the modification A, the former tube 12 can be easily removed at a position away from the support plate 51 without being hindered by the casing or the like.

Further, since the connecting portion 52a is capable of attaching and detaching the support plate 52b to one of the support plates 51, enlargement of the article filling device 100 is suppressed.

(6-2) Modification B
In the above embodiment, the former tube 12 and the funnel tube 22 are configured as separate members, but the funnel tube 22 may also be formed to function as the former tube 12. More specifically, the funnel tube 22 is formed to have an outer circumferential diameter corresponding to the inner circumferential diameter of the cylindrical packaging material Fm, a spreader is formed at the lower end, and communicates with the outside to supply air to the inside. An opening may be formed.

In the article filling device 100 according to the modified example B including the funnel tube 22 formed in this manner, the sailor 11 guides the packaging material F toward the outer peripheral surface of the funnel tube 22 along the surface. The funnel tube 22 has the packaging material F folded back by the sailor 11 wrapped around its outer peripheral surface. The pull-down mechanism 13 adsorbs the packaging material F wrapped around the outer peripheral surface of the funnel tube 22 and conveys it downward along the length direction of the funnel tube 22.

Since the article filling device 100 according to Modification B does not require the former tube 12, it can be easily maintained and manufacturing costs can be suppressed.

11: Sailor 12: Former tube 12c: Central shaft (former tube)
12u: Upper end (former tube)
22: Funnel tube 22c: Central axis (funnel tube)
22u: Upper end (funnel tube)
22o: Opening (funnel tube)
22p: Projection 22s: Outer surface (funnel tube)
23: Auger screw 23c: Center shaft (augus screw)
40: Lateral sealing mechanism 50: Support member 100: Article filling device B: Bag F: Packaging material Fm: Cylindrical packaging material

Japanese Patent Application Publication No. 2008-127057

Claims (3)

A sera that forms sheet-like packaging material into a cylinder,
a cylindrical former tube around which the packaging material is wrapped;
a cylindrical funnel tube inserted inside the former tube;
an auger screw for transporting the packaged item inside the funnel tube,
Both the former tube and the funnel tube are
The central axis is arranged along the vertical direction,
The funnel tube is
inserted into the former tube so that the outer peripheral surface is exposed above the upper end of the former tube,
having a protrusion protruding from the exposed outer circumferential surface;
The protruding portion is
contacting the upper end of the former tube to restrict downward movement of the funnel tube;
Goods filling equipment. further comprising a support member that supports the former tube,
The former tube is
supporting the funnel tube in a state in which the protrusion is in contact with the upper end of the former tube;
The sweater, the funnel tube, and the auger screw are integrally removed from the support member while the protrusion is in contact with the upper end of the former tube.
The article filling device according to claim 1. The protruding portion is
a flange protruding from the outer peripheral surface;
The article filling device according to claim 1 or 2.