JP2716673B2 - Bag making machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag making machine for manufacturing an outer bag for carrying.

[0002]

2. Description of the Related Art For example, disposable diapers, for example, are often accommodated in a polyethylene film carrying outer bag so that the outer shape of the bag is substantially rectangular parallelepiped. An outline of the method of manufacturing the outer bag will be described. As shown in FIG. 10, a tubular bag material 91 that has been gusset-folded in advance is welded to provide seal portions 92 and 93 at predetermined intervals.
A hole 95 is formed in a portion sandwiched between the holes to form a handle 95 (handle). If necessary, the reinforcing sheet 96 is overlapped on the handle 95 and welded, and a perforation 97 is provided in the middle of the bag. The opening is sealed after storing the articles in the bag body 90 divided into sections by the cutting line YY. FIG. 11 shows the external appearance of an outer bag containing articles such as disposable diapers. In the figure, reference numeral 98 denotes a bottom seal portion.

[0003]

However, as described above, since the bag material is double-sealed to separate the bag portion and the handle portion, the handle portion that does not become a bag is taken into account from the viewpoint of material removal. There is no use. Therefore, usually only a small handle is provided, and it is difficult to hold the outer bag by hand, especially when the outer bag is large. In addition, when the strength of the handle formed of the bag material is insufficient, it is necessary to overlap and weld a reinforcing sheet or the like. In the bag making machine for manufacturing the conventional bag described above,
Since two seal portions are provided at a predetermined interval, the structure becomes complicated correspondingly, and it takes time to adjust the parallel hot blades. That is, there is a demand for simplifying the sealing mechanism and reducing the material cost.

The present invention has been made in view of the above problems, and has as its object to provide a functionally excellent outer bag at a relatively low cost.

[0005]

To this end, the following bag making machine was created. That is, the first invention is a bag making machine for manufacturing an outer bag for a handbag, wherein a raw material supply means for feeding a raw material formed by gusset folding a tubular bag material in a longitudinal direction, and a handle piece are provided. A handle piece supply means for feeding a strip-shaped film sheet formed in a continuous shape to a position along the web, and forming the top seal portion of the bag body by closing the web in the transverse direction; A sealing and cutting means for joining the base end of the handle to the top seal portion and separating the handle from the film sheet; and separating the handle from the base and overlapping the gusset fold. Spot joining means for spot joining the raw material at a position. Also, the second
The invention of the above-described bag making machine, wherein the perforation means for perforating the raw material to which the handle piece is joined, the perforation extending from the top seal portion side to the finger hook hole position of the handle piece. It is characterized by having.

[0006]

In the above-described bag making machine, when the gusset-folded tubular raw material is closed in the transverse direction to form the top seal portion of the bag body, the handle is joined to the top seal portion and the film is formed. It is cut off from the sheet. The handle piece, whose base end is joined to the original web, is further spot-joined at a position overlapping with the zet fold. Further, a perforation extending from the top seal portion side to the position of the finger hole of the handle piece is formed.

[0007] Therefore, in the above-mentioned bag making machine, a handle is not formed by a part of the raw material as in the conventional example, so that material is not wasted on the raw material. In addition, the handle can be made large and a perforation can be easily provided on the top seal portion side. Further, since the spot joining is performed at a position where the handle piece overlaps the gusset folded portion, for example, welding can be reliably performed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an outer bag for carrying manufactured by a bag making machine described later will be described. FIG. 1 is a perspective view of the outer bag. As shown in the figure, the outer bag 1 has a basic shape in which a tubular bag 2 made of a synthetic resin film is gusset-folded in advance, and one end is linearly sealed by, for example, heat welding. For example, the base end of the handle piece 4 having a finger hole 4a formed in a synthetic resin film sheet (also referred to as a tape sheet) thicker than the material of the bag body 2 is formed on the top seal portion 3 of the bag body 2 by heat. They are joined by welding. The handle piece 4 extends toward the opening 5 serving as a bottom seal portion, and is spot-joined at a predetermined position (in this example, one gusset-folded fold) overlapping with the gusset-folded portion 6 by welding or bonding. 7 are provided. In this spot joining, the handle piece 4 and the bag 2 are joined with enough strength to be able to be separated by hand, and the position is shown in FIG. It is set at a position distant from the base end of the handle piece 4 in the maintained substantially triangular section 10 (one representative area is hatched) adjacent to the top seal section 3. In addition, the bag 2 has
Reference, finger hole 4a of handle 4 from top seal portion 3 side
A perforation 8 extending substantially in a T-shape is provided therein.

Next, the usage of the outer bag 1 having the above structure will be described. As shown in FIG. 2, for example, an outer bag 1 that is packed with articles such as a disposable diaper and swells in a substantially rectangular parallelepiped,
The opening 5 is sealed to form a bottom seal 9. On the other hand, on the top seal portion 3 side, the handle piece 4
Is kept in close contact with the bag body 2 because spot bonding is performed at a position away from the base end. When the outer bag 1 is to be held by hand, as shown in FIG. 3, the handle piece 4 is pulled to be separated from the spot joining portion 7, and the handle piece 4 is bent and used in an upright state. Moreover, the perforations 8 on the top seal portion 3 side of the outer bag 1 can be broken to take out the articles in order from the end of the bag.

As described above, the outer bag 1 is spot-joined with the handle piece 4 having the base end joined to the bag body 2 at a position further away from the base end. 2
Even if the items are packed, the handle piece 4 does not protrude from the bag body 2, and therefore, it is easy to maintain the appearance at the time of display. Also,
Since the spot joint 7 is provided in the substantially triangular area 10 in which the gusset folds 6 do not spread and maintain a two-ply state, joining is ensured, and when the handle piece 4 is separated from the spot joint 7. The bag 2 is hardly torn, and even if it is torn, there is no inconvenience such as the inside of the bag being exposed. Moreover, since the handle 4 of the outer bag 1 is enlarged, the perforation 8 is formed by the top seal portion 3.
It is easy to use because the upper end of the bag can be opened to take out articles.

Next, a bag making machine for manufacturing the outer bag 1 will be described. This bag making machine is for producing the bag 2 in a connected state. 4 and 5 are configuration diagrams of the bag making machine. As shown in both figures, the bag making machines are roughly classified into a raw material supply means 20, a handle piece supply means 30, a seal
It comprises a cutting means 40, a main sealing means, a perforation means 60 and a winding means. In order to control the operation of a series of these means at a predetermined timing, means for positioning a workpiece such as a raw material is provided.

The material roll applied to this bag making machine will be described. The material roll 12 shown in FIG. 7 is divided into a bag material 13 which is a bag material made of a synthetic resin film material in a tube shape. In this case, a position detection mark 13a is printed, a gusset folded portion 6 is formed, and the roll is wound in a roll shape. On the other hand, the tape sheet roll 14 for the handle piece 4 rolls a synthetic resin tape sheet 15 (also referred to as a film sheet, which has a planar shape before punching on the right end side in FIG. 8) which is thicker than the raw material 13. Some are wound in a shape. Hereinafter, the raw material supply means 20 will be described in order.

Referring to FIG. 4, the material roll 12 is rotatably supported by a support (not shown).
The raw material 13 which is rewound by the rotation of and is continuously fed forward is transferred to the seal / cutting means 40 via guide rollers provided at each part as necessary. I have. Then, the first mark sensor 23 detects the position detection mark 13a of the web 13 and, based on the detected position information, the first fixed-size feed roller 24 rotates to size the web 13 (of the bag). Intermittently). The dancer roll 22 adjusts the mismatch between the feed amount and the tension generated between the continuous rotation of the material supply roller 21 and the intermittent rotation of the first fixed-size feed roller 24.

On the other hand, a tape sheet roll 14 is rotatably mounted on the handle piece supply means 30 which is symmetrically disposed so as to sandwich the fed material 13, and a continuously rotating tape sheet supply is provided. The tape sheet 15 is pulled out by the rollers 31, and passes through the corner cut unit 33 and the punching unit 34 via the dancer rollers 32. In this tape sheet 15, the first photoelectric sensor 35a detects the breakage of the tape before processing, and the second photoelectric sensor 35b detects the position after processing. The sheet is intermittently fed by a conveyor 36 (described below), and the tape sheet 15 is successively processed into a predetermined shape in synchronization with the feed. FIG. 8 shows an original shape 15a of the tape sheet 15 before processing, a shape 15b of which both edges are cut by the corner cut unit 33, and a shape 15c of which the finger hole 4a is drilled by the punching unit 34. Show. The above-mentioned handle piece 4 is obtained by separating these pieces one by one.

The above-mentioned tape fixed-size feed conveyor 36 is shown in FIG.
The driving roller 36a and the driven roller 36
The tape sheet 15 is sandwiched between a plurality of coil spring-shaped belt bodies 36c hung between the tape sheet 15 and the sheet b. That is, the flexible tape sheet 15 is moved from the tape fixed-size feeding conveyor 36 to the sealing / cutting means 4 in a state of increasing rigidity.
It protrudes into zero. In the drawing, reference numeral 37 denotes a guide member for guiding the tape sheet 15 processed into the shape 15c to a predetermined position along the web 13.

Next, the seal / cutting means 40 provided immediately before the first fixed-size feed roller 24 will be described. As shown in FIG.
A cutter 41 for cutting the tape sheet 15; a hot blade 42 for joining the tape sheet 15 to the web 13; a spot body 43 for spot joining the two; and a holding arm 44
a and 44b are unitized, and a pair of left and right units are provided so as to be able to move in and out of the lateral direction.
In addition, the cutter 41, the hot blade 42, and the spot body 43 have heating means such as a heater. In FIG. 6, the web 13 transferred from top to bottom is guided downward in a slit formed by the pair of cutter receiving plates 45, and further,
After the receiving member 46 provided at a predetermined position corresponding to the spot body 43 and receiving the pressing force is inserted into the gusset folded portion 6 of the raw material 13 from both right and left sides, the first
It is guided to the fixed size feed roller 24.

The pair of cutter receiving plates 45 is supported by a cylinder (not shown) so as to be vertically movable, and always stands by at an upper retracted position. Then, when each of the web 13 and the tape sheet 15 is fed by a fixed size, the cutter receiving plate 45 is lowered to the position shown by the imaginary line, and the pressing arm 44a presses the tape sheet 15 against the cutter receiving plate 45. The holding arm 44b presses and grips the web 13 and the tape sheet 15. In this state, the cutter 41 cuts the tape sheet 15, and the hot blade 42 welds the base end of the handle piece 4 to the web 13, and at the same time, forms a seal portion extending in a direction crossing the web 13, and forms a spot. Body 4
Reference numeral 3 denotes a middle part of the handle piece 4 and a gusset folded part 6 of the raw material 13.
Spot bonding at a predetermined position overlapping with. At this time, the welding area of the spot joint 7 (see FIGS. 9 and 2) is small,
The joining strength is set to such an extent that a person can easily pull the handle piece 4 to separate it. In some cases, the heat welding can be replaced by bonding or the like.

Thereafter, the holding arms 44a, 44b and the like are separated to the left and right, and the cutter receiving plate 45 is returned to the retracted position so that the feed of the raw material 13 and the tape sheet 15 can be smoothly carried out. Ends. FIG. 9 shows the processing state of the material 13 at this time.
However, perforations 8 in the figure are processed in the following steps.

Next, the main sealing means and the perforation means 60 will be described. As shown in FIG. 5, the second mark sensor 51 and the third mark sensor 62 detect the position detection mark 13a of the web 13 and, based on the detected position information, the second fixed-size feed conveyor 52 and the third The fixed-size feed conveyor 63 operates to intermittently feed the web 13 with the handle piece 4 by a fixed size (length for one bag). The main seal unit 53 uses a hot blade (not shown) to weld the seal portion joining the base ends of the handle pieces 4 with a relatively large pressure and a large amount of heat, and to seal the top of the bag onto the raw fabric 13. The top seal portion 3 that is heat-welded is cooled by a cooling unit 54 provided adjacently, for example, of a water-cooling type.

The main sealing means is used to re-weld the sealing portion formed by the sealing and cutting means 40 again to increase reliability. Can be omitted. That is, if the sealing / cutting means 40 is provided with a heat blade having a required capacity, the configuration of the bag making machine can be simplified by omitting the main seal unit 53.

Subsequently, the web 13 is transferred to the perforation means 60, where the perforation unit 61 is moved from the top seal side end of the web 13 into the finger hole 4 a of the handle 4. Into the perforation 8 extending. Note that FIG.
In, the perforation 8 is formed in a substantially T shape, but may be formed in a U shape, for example.

The web 13 fed from the third fixed-size feed roller 63 is wound on a feed roller 72 and a take-up roll 73 via a dancer roll 71.
It is wound up as a bag roll 18 by this winding means. The bag roll 18 is transferred to a bag packing step (not shown) and cut by a packing machine or the like along the cutting line XX in FIG. 9 to form the above-described single bag 2 (see FIG. 1). However, in some cases, a cutting mechanism can be added to the bag making machine of this example.

The bag making machine of this embodiment is configured as described above, and is a web 1 formed by gusset folding a tubular bag material.
3, the sheet-shaped handle piece 4 is overlapped at a predetermined position, the base end of the handle piece 4 is joined to a position to be a top seal portion of the bag body, and the handle piece 4 overlaps the gusset folded portion 6. The present invention embodies a method for manufacturing a bag body that is spot-joined to a web 13 at a position. Therefore, unlike the prior art, the bag (raw material) is not sealed at a predetermined interval and divided into a bag portion and a handle portion, and a hole for finger hanging is not formed there. Efficiency is improved and there is no waste,
Cost reduction becomes possible. In addition, since spot joining is performed at a position where the handle piece overlaps the gusset folded portion, joining can be reliably performed when two bag materials are welded.

[0024]

As described above, in the bag making machine of the present invention, the base end of the handle piece is joined to the raw material of the bag material, and the handle piece overlaps with the gusset folded portion. Since the material is spot-joined to the material at a position, waste of material removal from the material can be reduced as compared with the related art, and the cost can be reduced even if the handle is enlarged. Since the spot joining is performed at a position where the handle piece overlaps the gusset folded portion, joining by, for example, welding can be reliably performed. That is, there is an effect that an outer bag excellent in function can be provided relatively inexpensively.

[Brief description of the drawings]

FIG. 1 is a perspective view of an outer bag manufactured by a bag making machine according to an embodiment.

FIG. 2 is a diagram showing a state where articles are stored in the outer bag.

FIG. 3 is a view showing a state in which a handle piece of the outer bag is erected.

FIG. 4 is a configuration diagram illustrating a right half of the bag making machine according to the embodiment.

FIG. 5 is a configuration diagram showing a left half of the bag making machine of the embodiment.

FIG. 6 is an enlarged view showing a main part of the bag making machine of the embodiment.

FIG. 7 is a diagram showing a raw material for a bag.

FIG. 8 is a plan view showing a tape sheet and a processed shape thereof.

FIG. 9 is a view showing a bag in a connected state.

FIG. 10 is a view showing a conventional bag body.

FIG. 11 is a diagram showing a state in which an article is stored in a conventional outer bag.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer bag 2 Bag 3 Top seal part 4 Handle piece 5 Opening part 6 Gazette fold part 7 Spot joint part 8 Perforation 12 Raw material roll 13 Raw material 14 Tape sheet roll 15 Tape sheet 18 Bag body roll 20 Raw material supply Means 30 Handle piece supply means 40 Sealing / cutting means 60 Perforation means

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-127427 (JP, A) JP-A-63-44451 (JP, A) Actually open Japanese Patent Laid-Open No. 60-8260 (JP, U) Actually open 29945 (JP, U) Jikken 48-14185 (JP, Y1)

Claims (2)

(57) [Claims] 1. A bag making machine for manufacturing an outer bag for carrying.
, The length of the raw material formed by gusset folding the tubular bag material
The raw material supply means for feeding in the direction and the belt-like film sheet
Handle supply means for sending out to a position along the web
And closing the material in the transverse direction to form the top seal of the bag.
When forming, the base end of the handle piece is
At the same time
Sealing and cutting means for separating the handle from the base end and a gusset folded portion
Spot joining to spot-join the raw material at the overlapping position
And a means . 2. The bag making machine according to claim 1, wherein
The top seal portion for the raw sheet to which the hand piece is joined
A perforation extending from the side to the position of the finger
A bag making machine provided with a perforation means.