JP3513887B2 - Manufacturing method of fluid storage container - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has an inner bag inside a cylindrical body, and the inner bag contains contents (fluids such as liquids and powders).
Particularly, the present invention relates to a fluid storage container called a back-in-box in which liquid is stored. 2. Description of the Related Art Generally, in a fluid container, a turret having a holder on an outer peripheral portion is intermittently rotated on a horizontal plane by a drive shaft, and folding and joining of a container end are performed on a rotation locus of the holder. . Then, after applying the hot melt to the folding piece of the container, in the method of obtaining the fluid storage container by folding the folding piece, the hot melt gun is extended in the horizontal direction, and the hot melt is directed to the folding piece from the horizontal direction. To make it spray. [0003] However, according to such a conventional method, a package having a rectangular body with an open upper section and a rectangular cross section, and a plastic film disposed inside the cylindrical body and having an open upper section are provided. When trying to manufacture a fluid storage container from the body, since it has a plastic film that becomes an inner bag separately from the cylindrical body, when applying hot melt, it is necessary to cut off the plastic film and open only the folding piece, When folding the folding piece, it is necessary to push the inner bag into the cylindrical body without fail. [0004] That is, in order to obtain a fluid storage container from a package having a plastic film by a conventional method, there is a step of opening only a folding piece separately from the plastic film, The process of pushing the inside of the cylindrical body must be increased, which complicates the structure of the device and, since the hot melt gun extends in the horizontal direction, some devices are arranged around the rotation trajectory of the holder. It takes up a lot of space, the entire device becomes larger,
There is a problem that increases the cost. The present invention has been devised in view of the above circumstances, and an object of the present invention is to obtain a fluid storage container from a package having a cylindrical body and a plastic film, and obtain a rotation locus of a holder for holding the package. It is an object of the present invention to provide a manufacturing method capable of reliably obtaining a fluid storage container with a simple and compact manufacturing apparatus without unnecessarily increasing the space of devices arranged around the apparatus. SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a tubular member having a rectangular cross section with an open upper portion, a tubular member disposed inside the tubular member and having an upper portion. The package made of the opened plastic film is intermittently rotated with its upper part facing upward on a circumference around a drive shaft extending vertically, and at an appropriate stop position of the package transferred by the intermittent rotation. The upper portion of the plastic film is sealed to form an inner bag, and at a stop position different from the stop position, when applying the hot melt to the upper fold piece of the cylindrical body and folding the fold piece, first from above, While holding the upper part of the inner bag inside the cylindrical body, open the folded piece to be coated with the hot melt horizontally, and then inject the hot melt downward from above the folded piece, and then, Piece Only folding, pressing the top of the inner bag,
The guide, which is formed by a presser descending from above and horizontally opens the folding piece, is lowered from above together with the presser. The hot melt gun can be disposed by utilizing the dead space above the package, and the entire apparatus can be made compact. In addition, while holding the upper part of the inner bag against the inside of the cylindrical body and opening the foldable piece to be coated with hot melt, only the foldable piece can be reliably opened without interfering with the inner bag. The application of hot melt to the coating is also ensured. Also, the guide opening a folded piece horizontally, since lowering from above with presser for pressing the inner bag, can be simplified, compact device with common members for supporting the retainer and guide, of the package It is advantageous in terms of space when arranging these presser and guide together with the hot melt gun above. A method for manufacturing a fluid container according to the present invention will now be described with reference to the accompanying drawings together with a manufacturing apparatus. FIG. 16 is a perspective view of the upper part of the fluid container, and FIG. 7 is a perspective view of the upper part of the package. The fluid storage container 1 shown in FIG. 16 is manufactured from the packaging body 3 shown in FIG. 7, and the packaging body 3 is provided with a tubular body 5 having an open upper section and a rectangular cross section, and inside the tubular body 5. A plastic film 7 having a rectangular cross section with an open top and a cylindrical body 5
The portion of the plastic film 7 is adhered to the inside of the tubular body 5 so as not to shift with respect to the cylindrical body 5. As shown in FIG. 7, a first front portion 501 to which the plug 9 is attached is formed through a broken line 503 on the upper portion of the front surface 5A of the cylindrical body 5, and this first front portion 501 is formed. Is provided with a first front piece 505 via a polygonal line 504. A pair of folded pieces 513 is formed above the left and right surfaces 5B and 5C of the cylindrical body 5 at a position closer to the front face 5A via a first bent line 509 and a second bent line 511, and is folded on the second bent line 511. A circular hole 515 is formed so that the piece 513 can be easily folded inward around the second broken line 511.
And a diamond-shaped notch 516 are formed. Left and right pieces 517, 519 protrude from the upper part of the left and right faces 5B, 5C of the tubular body 5 near the rear face 5D via a broken line 521, and the width of the left and right pieces 517, 519 is equal to the left and right faces 5B, 5C. Is about half of the width. A rear piece 523 protrudes from a top surface of a rear surface 5D of the tubular body 5 via a broken line 525. In the embodiment, the first front portion 501, the first front piece 505, the left and right pieces 517, 519, and the rear piece 523 correspond to folding pieces. FIG. 1 is a plan view of an apparatus for manufacturing a fluid container,
FIG. 2 shows the same side view. The manufacturing apparatus 11 includes an apparatus main body 13 and a punching unit 15. The apparatus main body 13 includes a bottom plate 13.
Base 1 consisting of base plate 01, intermediate plate 1303, and upper plate 1305
307, a motor 1309 and an indexing device 1311 are arranged on a bottom plate 1301, and a drive shaft 21 is erected over bearings 1315 and 1317 over an intermediate plate 1303 and an upper plate 1305 so as to be rotatable. The indexing device 1311 is driven by the motor 1309, and the output of the indexing device 1311 is
The drive shaft 21 is transmitted to the drive shaft 21 via 19, and the drive shaft 21 is intermittently rotated. The drive shaft 21 between the intermediate plate 1303 and the upper plate 1305 is equally spaced in the circumferential direction, and six mandrels 23 having a rectangular cross section are directed radially outward of the drive shaft 21. It is arranged. As shown in a plan view in FIG. 3 and a perspective view in FIG. 4, a circular turret plate 25 is attached to a portion of the drive shaft 21 protruding from the upper plate 1305. Six holders 27 are arranged at intervals. The holder 27 holds the package 3 whose bottom is folded and joined with its upper part facing upward. As shown in FIG. 3, the holder 27 has the bottom of the package 3 placed thereon. Two rods 27
01, a back plate 2703, and left and right side plates 2705. A package 3 having both ends opened is mounted on the mandrel 23 by an operator, and when the drive shaft 21 is intermittently rotated, the plastic film 7 is placed on the rotation locus of the mandrel 23 about the drive shaft 21. The bottom seal and the folding and joining of the bottom of the tubular body 5 are performed.
Next, the package 3 is taken out of the mandrel 23 and supplied to the punching unit 15. In the punching unit 15,
As shown in FIG. 5, the male die 1523 enters the inside of the cylindrical body 5 and the plastic film 7, and the female die 1525 moves outside the cylindrical body 5, and Face each other at the place where the plug is to be installed. And
The male die 1523 moves to the outside of the cylindrical body 5 and engages with the female die 1523, whereby the cylindrical body 5 and the plastic film 7 are punched out, and the first front surface 5
In FIG. 1, a plug mounting hole 31 is formed. Next, as shown in FIG. 6, the plug 9 is mounted on the plug mounting hole 31 by an operator, and the plug 9 is mounted at the station A which is one of the intermittent stop positions of the holder 27. The package 3 is mounted on the holder 27 by a worker with the front face 5A facing outward. During the intermittent rotation of the drive shaft 21, welding of the outer peripheral portion of the plug 9 to the plastic film 7 and the plastic film 7 on the rotation locus of the holder 27 around the drive shaft 21.
Is sealed, the upper part of the cylindrical body 5 is folded, and the hot melt is joined, so that the fluid container 1 is obtained. The obtained fluid container 1 is taken out of the holder 27 at the station F and transported to the next step. Next, an outline of the above-described steps performed on the rotation locus of the holder 27 will be described. Station A
Is transferred from the station A to the station B by the intermittent rotation of the drive shaft 21. In the station B, as shown in FIG. 2, the bottom plate 33 is raised by the extension operation of the air cylinder 32 to lift the package 3, and at the same time, the suction cup 37 is attached to the front surface 5A of the package 3 by the extension operation of the air cylinder 35. In this state, the package 3 is lifted away from the holder 27 by the extension operation of the air cylinder 32 in this state. When the holder 27 rises, the anvil 38 is inserted into the plastic film 7, and the ultrasonic horn 41 approaches the plug 9 from the outside of the package 3 by the air cylinder 39, and the ultrasonic horn 41 When the ultrasonic wave is oscillated, the outer peripheral portion of the plug 9 and the plastic film 7 are welded, and after the welding, the package 3 is reversely operated by the above operation.
Is lowered to the original position, and the suction cup 37 is separated from the package 3. The outer periphery of the spout 9 is made of a plastic film 7
Is transferred from the station B to the station C, and when the package 3 is transferred from the station B to the station C, the first front piece 505 of the tubular body 5 is guided by a guide (not shown) as shown in FIG. ) To open outward.
When the package 3 is transferred to the station C, the left and right pieces 517 and 519 are opened by a guide (not shown) as shown in FIG. Next, as shown in FIG. 9, the plastic film 7 is spread horizontally along with the rear piece 517, and then the end of the horizontally spread plastic film 7 is heat-sealed (not shown) in FIG. (Shown) to seal and form an inner bag inside the cylindrical body 5. Next, the package 3 is transferred from the station C to the station D. In the station D, first, the upper end of the inner bag is pushed into the inside of the tubular body 5, and then, as shown in FIG. 11, the left piece 517 is opened horizontally outward, and the inner surface of the left piece 517 Then, the hot melt is applied, and then the rear piece 523 is folded over the inner bag as shown in FIG. Next, as shown in FIGS. 13 and 14, the broken line 511 is pushed into the cylindrical body 5 and the first front face 501 is bent obliquely.
At the same time, the first front piece 505 is folded on the rear piece 523. Next, the left piece 517 coated with hot melt is
As shown in FIG. 15, the rear piece 523 and the first front piece 505 are folded and pressed for a predetermined time so that the left piece 517 is joined to the rear piece 523 and the first front piece 505. Next, the package 3 is transferred from the station D to the station E, where the right piece 519 is opened and the hot melt is applied on the left piece 517, as shown in FIG. As shown, the right piece 519 is folded over the left piece 517, pressed for a predetermined time, and thereby joined to obtain the fluid storage container 1. Hereinafter, the process according to the present invention performed in the station D will be described in detail with reference to FIGS. As shown in a side view in FIG. 17 and a front view in FIG. 18, a column 43 (see FIG. 20) erected from an upper plate 1305 is provided above the package 3 stopped at the station D. The air cylinder 47 is attached to the support plate 45 vertically, and the elevating plate 49 is moved up and down by the expansion and contraction operation of the air cylinder 47.
Is provided. The mounting plate 5 is provided below the lifting plate 49.
At the lower end of the mounting plate 51, a holding member 53 for pressing the upper part of the inner bag into the inside of the tubular body 5 is attached. A left piece 51 is provided at a lower end of the mounting plate 51.
A guide plate 55 for opening the cover 7 outward is provided to be swingable via a pin 57 and an arm 59. The distal end side of a piston rod 6101 of an air cylinder 61 slidably provided below the elevating plate 49 is connected to the arm 59, and the guide plate 55 is oscillated by the expansion and contraction operation of the air cylinder 61. ing. Above the right side of the package 3 stopped at the station D, the hot melt gun 63 is disposed via the bracket 65 and the support plate 45 with the nozzle 6301 facing downward.
An air cylinder 71 is horizontally provided below the support plate 45 via a horizontal support plate 67 and a vertical support plate 69 so as to face behind the rear surface 5D of the package 3. A guide plate 73 for folding the rear piece 523 on the inner bag is provided at the tip of the piston rod. Further, as shown in the side view of FIG. 19 and the front view of FIG. 20, an air cylinder 75 is mounted on the support plate 45 so as to face forward and upward of the package 3. Further, an arm 79 that swings around a support shaft 77 by the expansion and contraction operation of the air cylinder 75 is provided, and the arm 79 is provided with a guide plate 81 for folding the left piece 517. FIG. 21 is a side view, FIG. 22 is a plan view, FIG. 23 is a front view, and FIG. 24 is a main part on the upper plate 1305 in front of the package 3 stopped at the station D. As shown in the plan view, an air cylinder 83 is horizontally disposed toward the drive shaft 21 via a base 84, and the air cylinder 83 is movable in the direction of separating and approaching the package 3 by the expansion and contraction operation of the air cylinder 83. A first moving plate 85 is provided, and the first moving plate 8
At the front end of 5, an abutment plate 87 is provided which comes into contact with the front surface 5A. An air cylinder 89 is provided horizontally on the first moving plate 85 toward the drive shaft 21. The second moving plate 91 is movable in a direction approaching and separating from the package 3 by the expansion and contraction operation of the air cylinder 89. Is provided.
The front end of the second moving plate 91 has an inclined surface 9 with an oblique tip.
A pair of left and right guide plates 93 formed at 301 to bend the first front portion 501 are attached.
As shown in FIG. 24, the first front piece 505
A guide plate 95 for folding is mounted via a holder 97. On the left and right sides of the second moving plate 91, there are provided arms 101 for pushing the broken line 511 into the cylindrical body 5, respectively. The arm 101
Is swung by a link mechanism 103 provided between the first and second moving plates 85 and 91, and the link mechanism 103
It is driven according to the relative displacement between the second moving plates 85 and 91. When the package 3 is transferred to the station D, first, the air cylinder 47 is extended and the lifting plate 4 is moved.
9 falls. Then, the holding tool 53 comes into contact with the upper part of the inner bag in the tubular body 5 by lowering the elevating plate 49, and pushes the upper part of the inner bag into the tubular body 5. The guide plate 55 is also lowered by the lowering of the elevating plate 49. After the upper part of the inner bag is pushed into the inside of the tubular body 5 by the presser 53, the air cylinder 6 is pressed.
1 extends, the guide plate 55 is swung about the pin 57 as a fulcrum, and the left piece 517 is horizontally opened outward by the guide plate 55 as shown in FIG. Next, nozzle 6
Hot melt 105 is sprayed from 301 and left piece 517
Is applied to the inner surface of the Next, air cylinders 47, 6
The air cylinder 71 is extended at the same time as 1 is reduced. As a result, the presser 53 rises, and the guide plate 5
12, the rear piece 523 is folded on the inner bag by the guide plate 73, and the left piece 517 coated with the hot melt 105 is almost in its original standing state due to its elasticity, as shown in FIG. Returns to the state. Then, the air cylinder 83 is extended, the first and second movable plates 85 and 91 approach the package 3, and the contact plate 87 contacts the front surface 5A of the package 3. Next, the air cylinder 89 is extended and the link mechanism 103 is driven by the relative displacement between the first and second moving plates 85 and 91 at this time, the arm 101 swings toward the package 3 side, and the tip of the arm 101 is moved. The bent line 511 is pushed into the cylindrical body 5 by the pushing tool 101A. Then, the arm 101 swings outward by the further extension operation of the air cylinder 89 and separates from the package 3, and at the same time, FIG.
As shown in FIG. 4, the inclined surfaces 9301 at the tips of the pair of left and right guide plates 93 abut on the first front portion 501 to bend the first front portion 501, and the guide plate 95 connects the first front piece 5.
05, the first front piece 505 is folded over the rear piece 523. Next, at the same time when the guide plates 93 and 95 are separated from the package 3, the arm 79 is swung by the contraction operation of the air cylinder 75, and as shown in FIG. Guide plate 8 on the outside
1 abuts the left piece 517 with the rear piece 523 and the first front piece 5
05, and the left piece 517 is pressed for a predetermined time in this state. Thereby, the left piece 517 is joined on the rear piece 523 and the first front piece 505. Next, the package 3 is transferred from the station D to the station E.
As shown in FIGS. 15 and 16, the right piece 519 is opened,
The hot melt 107 is applied on the left piece 517, and then the right piece 519 is folded on the left piece 517, pressed for a predetermined time, and joined to obtain the fluid storage container 1. The fluid storage container 1 thus obtained is transferred from the station E to the station F, taken out of the holder 27 at the station F, and transferred to the next step. According to the present embodiment, the hot melt 105 is sprayed onto the left piece 517 from above the package 3 and applied, so that the package 3 stopped at the station D is applied.
By using the dead space above the hot melt gun 63, the hot melt gun 63 can be disposed without securing any special space, and the hot melt 105 is applied to the left piece 517 without fail. The device makes it possible to reliably and easily obtain the fluid storage container 1. Further, since the left piece 517 is opened while the upper part of the inner bag is pressed into the inside of the tubular body 5 by the presser 53, it does not interfere with the inner bag despite the existence of the inner bag. Only the left piece 517 can be reliably opened, and the application of the hot melt 105 to the left piece 517 is also reliably performed. A guide 55 for opening the left piece 517 horizontally.
Is lowered from above together with the presser 53 for pressing the inner bag, so that the members 49 and 51 for supporting the presser 53 and the guide 55 can be shared to simplify and compact the apparatus. Above the package 3 to be stopped, together with the hot melt gun 63, these pressers 53
This is advantageous in terms of space when arranging the guides 55. In the embodiment, after the container 1 with the plug 9 is formed, the contents are filled from the plug 9.
The contents may be filled from the opening before sealing the upper opening of the inner bag, and then sealed. As is clear from the above description, according to the present invention ,
Lever, the space of equipment to be arranged around the rotational path of the holder for holding the capsule Sokarada without increasing unnecessarily, it is possible to obtain a reliable fluid container by a simple and compact production equipment.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of an apparatus for manufacturing a fluid storage container. FIG. 2 is a side view of an apparatus for manufacturing a fluid storage container. FIG. 3 is a plan view of a holder portion. FIG. 4 is a perspective view of a holder portion. FIG. 5 is an explanatory diagram of punching. FIG. 6 is an explanatory view of attaching a plug. FIG. 7 is an explanatory diagram of an upper part of a package. FIG. 8 is an explanatory view at the time of sealing a plastic film. FIG. 9 is an explanatory view at the time of sealing a plastic film. FIG. 10 is an explanatory view when a plastic film is sealed. FIG. 11 is an explanatory view of folding of the upper part of the package. FIG. 12 is an explanatory diagram of folding of the upper part of the package. FIG. 13 is an explanatory diagram of folding of the upper part of the package. FIG. 14 is an explanatory diagram of folding of the upper part of the package. FIG. 15 is an explanatory diagram of folding of the upper part of the package. FIG. 16 is an explanatory diagram of folding of the upper part of the package. FIG. 17 is a side view of a main part of the manufacturing apparatus disposed above the package stopped at the station D. FIG. 18 is a front view of a main part of the manufacturing apparatus disposed above the package stopped at the station D. FIG. 19 is a side view of a main part of the manufacturing apparatus disposed above the package stopped at the station D. FIG. 20 is a front view of a main part of the manufacturing apparatus disposed above the package stopped at the station D. FIG. 21 is a side view of a main part of a manufacturing apparatus disposed in front of a package stopped at a station D. FIG. 22 is a plan view of a main part of a manufacturing apparatus provided in front of a package stopped at a station D. FIG. 23 is a front view of a main part of the manufacturing apparatus disposed in front of the package stopped at the station D. FIG. 24 is a plan view of a main part of a manufacturing apparatus disposed in front of a package stopped at a station D. DESCRIPTION OF SYMBOLS 1 Fluid storage container 3 Packaging body 5 Cylindrical body 7 Plastic film 9 Spout 11 Manufacturing device 13 Device main body 27 Holder 63 Hot melt gun 105 Hot melt 501 First front portion 505 First front piece 517,519 Left and right pieces 523 Back piece

Continued on the front page (72) Inventor Tadao Aoki 4021 Nakatsu, Aikawa-cho, Aiko-gun, Kanagawa Prefecture (72) Inventor Yasuo Yamazaki 4021 Nakatsu, Aikawa-cho, Aikawa-gun, Aiko-gun, Kanagawa Prefecture (56 References: JP-B-49-34058 (JP, B1) JP-B-53-38669 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65B 7/16 B65B 7/00 B31B 1/52

Claims (1)

(57) [Claims] (1) A package comprising a tubular body having an open upper section and a rectangular cross section, and a plastic film disposed inside the tubular body and having an open upper section. The body is intermittently rotated with its upper part facing upward on a circumference around a drive shaft extending vertically, and at an appropriate stop position of the package transferred by the intermittent rotation, the upper part of the plastic film is sealed. At the stop position different from the stop position, when applying the hot melt to the upper folded piece of the tubular body and folding the folded piece, first, from above, the upper part of the inner bag is while suppressing inside, the hot melt horizontally open the folding piece to be coated and then, is injected toward the hot melt downward from above the folded piece, then look tatami folding the folding piece, the inner bag Hold down the top , Presser descending from above
Guide for opening the folding piece horizontally
Is lowered from above along with the presser .