JP3123039B2 - Raw film for packaging equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film material used in a packaging apparatus for making a film wound into a roll and filling the small bag with contents such as liquid, powder or viscous substance. It is about anti.

[0002]

2. Description of the Related Art Conventional filling and packaging machines for automatically filling and packaging contents such as liquids, powders, and viscous substances include:
For example, JP-A-2-46265 and JP-A-2-329
As shown in Japanese Patent Publication No. 29, 29, etc., a continuously transported film is folded, the folded edges of the film are overlapped and vertically sealed, and the contents are filled in the vertically sealed film, and the film is placed horizontally. An example of sealing is known, and an example of this will be described with reference to FIGS. 12 to 14. In FIG. 12, reference numeral 1 denotes a machine frame, and a holding frame 2 is provided on a side portion thereof. An original film R obtained by winding a film F into a roll is detachably provided. A film guide section 3 and a film folding section 4 are provided on an upper portion of the machine base 1. A vertical seal portion 5, first and second horizontal seal portions 6, 7 and a cutter portion 8;
The film F is pulled out from one roll-shaped film raw material R, led out to the film folding section 4 via the film guide section 3, and the film F is guided by the folding guide 9 having a U-shaped tip provided at the film folding section 4. Is folded in two along the longitudinal direction, the folded end portions of the film F are heat-sealed by a pair of vertical heat seal rolls 10 opposed to each other in the vertical seal portion 5 and sent out. The film F is heat-sealed in the horizontal direction by a pair of horizontal heat seal rolls 11 and 11 of the first horizontal seal portion 6 facing each other, and a bottom portion serving as a packaging bag is formed by the horizontal seal portion F2. F formed into a cylindrical shape with a bottom
The inside is filled with a content W made of a liquid such as a source by a filling mechanism 12, and the film F is further fed to the first horizontal sealing section 6 again by the horizontal heat seal rolls 11, 11. The side W is horizontally sealed to seal the contents W, and the horizontal sealing portion F2 is further sealed by the horizontal heat sealing rolls 11 of the second horizontal sealing portion 7, and then the intermediate portion of the horizontal sealing portion F2 is sealed. The film is cut by a cutter unit 8, film-wrapped by the cutter unit 8, and taken out and conveyed by a conveyor (not shown).

[0003]

In the above-described conventional filling and packaging machine, when one raw film R is completed, the operation of the apparatus is temporarily stopped, a new raw material R is loaded, and the film F is loaded. , And the film F is manually guided between a series of guide rollers of the apparatus, and a time-consuming operation such as repositioning in the width direction has been performed.

In consideration of this point, a spare film source R is set in advance on the side of the machine base 1 of the packaging machine, and the film F of the used film source R is consumed. There has been proposed a film connection mechanism for automatically connecting a preliminary film source R to a film F starting end side at times.

[0005] In this case, if the seam portion of the film F covers a part of the wrapped small bag FW, the packaging form is likely to be deteriorated and the commercial value is reduced. May leak out,
As a result, there is a problem that the small bag FW corresponding to the seam portion must be treated as a defective product and must be sorted out.

[0006] When the length of the film F is short in the manufacturing process of the film raw material R, the short film F is connected and rolled into a roll to form one film raw material R. In this case, even in this case, the film F
As described above, when the bag is made by the apparatus and the small bag FW is formed, if the seam portion of the rolled film R is applied to a part of the small bag FW, as described above, the packaging is performed. Since the form becomes worse, there is a problem that it has to be treated as a defective product and sorted out from a good small bag FW.

[0007] Further, the operation of the cutter unit 8 provided in the filling and packaging machine is stopped, and the small bags FW are carried out by the vertical heat seal roll 10 and the horizontal heat seal roll 11 while being continuously wrapped in a continuous packaging state, and are put into a box. In the case of storing, it is necessary to select only a defective portion while checking only the small bag FW portion corresponding to the joint portion of each of the films F, and remove the small bag FW at the joint portion manually with a cutter or the like. It was very annoying.

The present invention is particularly directed to a packaging material film having a seam in the middle of a film of a film wound in a roll, and capable of satisfactorily determining the seam of the film. The purpose is to provide.

[0009]

SUMMARY OF THE INVENTION The present invention relates to a film raw material for a packaging apparatus having a seam in the middle of a film raw material wound in a roll shape. The present invention is characterized in that a conductive foil sheet that can be electrically conducted is stuck and formed along the width direction of the film at the location. Another feature is that a conductive foil sheet is attached to the front and back surfaces of the film along the width direction of the film at the seam portion of the original film.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Note that the same parts or equivalent parts as in FIGS. 12 to 14 are denoted by the same reference numerals and described.

FIG. 1 to FIG. 11 show an embodiment in which the film raw material of the present invention is loaded in a packaging apparatus.
Are provided with two holding frames 2, 2, and a film source R obtained by winding a film F in a roll shape is provided on the holding frames 2, 2 so as to be detachable and replaceable. The starting end of the raw film R loaded on the other holding frame 2 is detected by detecting the terminal end of the raw film R loaded on the holding frame 2 and the continuous film connection is performed by means such as bonding. A mechanism 13 is provided.

A film slack preventing mechanism 14 is provided above the machine stand 1, and a guide roll 15 for guiding the film F passing through the film slack preventing mechanism 14 is provided above the film folding section 4. Turnback guide 9 in part 4
There is provided an adjustment mechanism 16 for moving the.

The adjusting mechanism 16 is provided on the upper part of the machine base 1 such that a nut body 17 can be moved forward and backward in a direction crossing the transport direction of the film F in a non-rotating state. And a motor 19 for rotating the screw shaft 18 in the forward and reverse directions is mounted on the upper part of the machine base 1, and the tip of the nut body 17 is U-shaped.
Attach the folded guide 9 formed on the surface
A rod-shaped guide rod 20 extending to a position above the horizontal seal portion 6 is hung down from the folded guide 9.

A nozzle 21 is provided alongside the guide rod 20 and extends to a position above the horizontal seal portion 6.
Fills the film F with contents W such as a liquid, a powder or a viscous substance by a filling device (not shown). Further, a pair of vertical heat seal rolls 10 and 10 of the vertical seal portion 5 are disposed with the guide rod 20 and the nozzle 21 interposed therebetween, and a bearing base 22 is attached to the front of the machine base 1. Both longitudinal heat seal rolls 10 and 10 are rotatably supported, and gears 23 and 23 meshing with one longitudinal heat seal roll 10 and the other longitudinal heat seal roll 10 are fixed. A driven gear 24 is integrally provided with the driven gear 24. A driven gear 25 driven by a driving device (not shown) provided in the machine base 1 is meshed with the driven gear 24, and a seal member 10A is provided on one side of both the vertical heat seal rolls 10, 10. In addition, a knurling process is performed on the outer peripheral surface of the seal member 10A, and a heater (not shown) is built in both vertical heat seal rolls 10.

The first horizontal seal portion 6 disposed below the vertical seal portion 5 and the second horizontal seal portion 7 disposed below the first horizontal seal portion 6 The gears 27 rotatably support the two horizontal heat seal rolls 11 and 11 between the bearing bases 26 and mesh with the one horizontal heat seal roll 11 and the other horizontal heat seal roll 11, respectively.
The driven gear 28 is provided integrally with one of the gears 27, and the driven gear 28 is meshed with a driving gear 29 driven by a driving device (not shown). Attached at angular intervals, a heater (not shown) for heating the seal member 11A is built therein.

The first and second horizontal heat seal rolls 1
The gear 31 of the rotary encoder 30 meshes with each of the gears 1 and 11 to detect the rotation of each of the horizontal heat seal rolls 11, and the rotation is converted into an electric signal by a control unit (not shown). The gears 25 and 29 are configured to rotate and rotate at a periodic peripheral speed.

The cutter section 8 disposed below the horizontal seal section 7 is provided with a rotary blade 8A on a rotary shaft 32 which is rotated by a drive device such as a servo motor (not shown). Correspondingly, a fixed blade 8B is provided on a support base 33 provided on the machine base 1, and a small bag discharging portion 34 for guiding the small bag FW cut by the operation of the cutter portion 8 is provided below the cutter portion 8. Is provided.

A film feeder R having a seam in the middle of the film raw R wound into a roll is provided on the side of the film connecting mechanism 13 where the film F is pulled out. A film seam detector 35 for detecting a seam J of the film F is provided.

Further, between the folding guide 9 of the film folding section 4 and the vertical heat seal roll 10, a shift in the width direction of both folded edges of the film F folded in two by the film folding section 4 is detected. A film edge shift detecting unit 36 is provided.

In this embodiment, a conductive member 38 made of a metal material is attached to a mounting plate 37 provided on the machine base 1 as shown in FIGS. The conductive members 38 are disposed on the inner surfaces of the folded end edges of the film F folded in two by the folding guide 9 of the film folded portion 4, and insulating members 39 are provided on both sides of the conductive member 38, respectively. , 39, a conductive detecting member 40 for softening is attached from the outer surface of the both end edges of the folded film F, and the detecting member 40 is formed by a flexible leaf spring 40A. The distal end portion of the leaf spring 40A is provided so as to be softly pressed toward the conductive member 38 from the outer surface of the folded both ends of the film F.

Although not shown, the conductive member 38 is electrically connected to the ground side of the filling and packaging machine, and the respective leaf springs 40A are connected by an electric cord 41, and at least one side of the leaf spring 40A. Is connected to a detection circuit 42 serving as a switching means by an electric cord 41, and is electrically connected to a positive side of a power supply of a filling and packaging machine (not shown) through the detection circuit 42 to
36.

As shown in FIGS. 4 and 5, the joints J provided in the middle of the film raw material R are arranged with the edges of the film F serving as the joints facing each other. The sheet 43 is adhered to one side of the film F, and the film F is transferred by the conductive foil sheet 43 provided at the seam J of the film F, and the film seam detecting unit 35 detects the conductivity of the seam J of the film F. By contacting the foil sheet 43, a normal film F portion and a joint portion J are determined.

In this case, the film joint detecting section 35
A brush 45 serving as a movable contact member having a mounting portion 44 made of an insulating material provided on a side portion of the machine base 1 and a handle portion 45B in which a plurality of bases of conductive fibers 45A are bundled is provided on the mounting portion 44. Provided in a pair, one brush 45 side is electrically connected to the plus side of the power supply side of the filling and packaging machine, and the other brush 45 side is connected to the minus side of the filling and packaging machine via the electric cord 46, respectively,
The conductive fiber 45A of the brush 45 is provided so as to be in contact with the film F drawn out and guided from the film roll R wound in the roll shape.

As described above, the pair of brushes 45, 45 serving as the movable contact members of the film seam detecting section 35 come into contact with the conductive foil sheet 43 provided at the seam J of the film F, so that the respective brushes 45, 45 And the conductive foil sheet 43 to form a closed loop and be electrically connected, whereby it is determined that the film F is a seam portion J.

After the film seam J is detected, the film F is sequentially sent to the vertical heat seal roll 10, the horizontal heat seal rolls 11, 11 and the cutter unit 8 side. Packaging film F
The front and rear positions are not cut by the cutter unit 8, and only the continuously connected packaging bags FE are treated as defective products in distinction from the normally filled and packed small bags FW, and are switched and discharged by the next small bag discharging unit 34. Then, the non-defective small bags FW and the packaging bags FE serially packed as the defective products are sorted.

In this case, the small bag discharging portion 34, which is located below the cutter portion 8 and is a cut small good bag F
A shooter 47 that slides down the W is provided.
It is conveyed to an unillustrated carry-out belt via 47. In addition, for the continuous packaging bag FE that received a signal as a defective product corresponding to the film seam portion J, a shooter
The sorting receiving plate 48 provided above the 47 is tilted about the support shaft 48A by the operation of the cylinder 49 connected to the sorting receiving plate 48, and the falling packaging bag FE slides down on the sorting receiving plate 48. The small bag carrying-out section 34 is configured to carry out the container along the slide plate 50 set at the substantially same inclined angle as the sorting receiving plate 48 and to store it in the defective product storing box 51.

After the packaging bag FE treated as a defective product is sorted by the sorting receiving plate 48, the sorting receiving plate 48 is retracted and returned to the original position with the support shaft 48A on the upper end as a base point by the operation of the cylinder 49. The good small bag FW is carried out to the shooter 47 side.

As described above, in the present embodiment, the film F is pulled out and guided from the rolled film raw material R in the normal wrapping state, and the continuously transported film F is folded at the film folding section. 4, the film F is folded in two along the longitudinal direction of the film F by the folding guide 9 of the film folding section 4, and the folded both edges of the folded film F are overlapped to form a vertical heat seal roll.
The film F is formed into a tubular shape by the vertical sealing portion F1, the film F is horizontally sealed by the first horizontal heat sealing roll 11, and the packaging is performed by the horizontal sealing portion F2. A bottom portion serving as a bottom portion serving as a bag is formed, and a filling mechanism 12 is provided in the film F formed into a bottomed cylindrical shape.
The contents W are sealed by horizontally sealing the bag opening side of the film F by the horizontal heat sealing roll 11 of the first horizontal sealing portion 6 while the film F is being fed. The horizontal sealing portion F2 of the film F thus obtained is double-sealed by the horizontal heat sealing roll 11 of the second horizontal sealing portion 7, and then the intermediate portion of the horizontal sealing portion F2 is
The small bag FW filled with the separated contents W is cut by the cutter unit 8 including the fixed blades 8A and the fixed blades 8B. Or sent on a carry-out belt.

The film raw material R wound into a roll shape
In this embodiment, when the seam J of the film F provided in the middle of the film F is guided out, the film F is formed by the conductive foil sheet 43 provided at the film seam J of the film raw material R wound into a roll. The film seam detecting section 35 comes into contact with the conductive foil sheet 43 at the seam J of the film F along with the transition of the conductive fiber 45A of the pair of brushes 45 provided in the film seam detecting section 35 and the conductive film 45A. The contact with the conductive foil sheet 43 forms a closed loop and is electrically connected to determine that the film is the seam J of the film F. According to this determination, the film F that is the seam J is sequentially heated by the vertical heat seal roll 10 and the horizontal heat seal roll 10. It is sent to the seal roll 11 and the cutter unit 8 side,
Based on the signal from the film seam detecting unit 35, the front and rear positions of the packaging film F at the film seam J are treated as defective parts and the sachet F is cut without being cut by the cutter unit 8.
The packaging bag FE in which the W is connected is discharged as it is.

At this time, in response to the signal from the film seam detecting section 35, the sorting receiving plate 48 provided in the small bag carrying-out section 34 tilts around the support shaft 48A by the operation of the cylinder 49, and falls. The packaging bag FE in the continuous packaging state is slid down onto the sorting receiving plate 48 holding the inclined state.
The packaging bag FE, which is carried out along the slide plate 50 installed at substantially the same inclined angle as that of 48 and is treated as a defective product, is accommodated in the defective product storage box 51, so that a good-quality small bag FW is obtained.
And the packaging bag FE to be treated as a defective product can be automatically sorted, so that the troublesome work of manually identifying and sorting a defective product by an operator can be eliminated. Humanization can be achieved.

When the small bags FW filled with the contents W are carried out, the small bags FW in which the small bags FW are separated from each other by the cutter unit 8 are carried out. The operation of the unit 8 is stopped,
In some cases, the vertical seal portion 5 and the horizontal seal portions 6 and 7 are operated to carry out a continuous bag FW in which the small bags FW filled with the contents W are connected, and the small bag FW is carried out in this continuous state. When the seam J of the film F is guided and pulled out, the film F is moved by the conductive foil sheet 43 provided at the film seam J, and the film seam detecting unit 35 is turned on by the conductive foil sheet 43. The conductive fibers 45 of the pair of brushes 45 provided in the film seam detecting section 35 in contact with
A and an electrically closed loop between the conductive foil sheet 43 and A are determined to be the seam J of the film F. By this determination, the area of the film seam J at the front and rear positions of the packaging film F is determined to be defective. The cutter unit 8 which has been kept stopped until now is activated, and the seam J
Is cut by the cutter unit 8, and only the cut packaging bag FE is sorted separately from the small bags FW which are delivered in a continuous packaging state as a good product in accordance with the operation of the sorting receiving plate 48 provided in the small bag delivery unit 34. The product is transported after being separated from the non-defective product.

In the next step, the small bags FW, which are still connected in the continuous packaging state of good products, are counted, for example, by the set number of small bags FW, separated, stored in a box, and packed.

The present invention is not limited to the above-described embodiment, but can be variously modified within the scope of the present invention. For example, in the above-described embodiment, the present invention is provided in the middle of the film raw material R. The joint portion J was formed by abutting the edges of the film F serving as a seam of each film F, and the conductive foil sheet 43 was attached to one surface of the film F in this abutting state. As shown, each film F serving as a seam of the rolled film raw material R
The conductive foil sheet 43 may be attached to the front and back surfaces of the abutted portion.

In this case, the conductive foil sheet 43 may be attached to the surface of one film F with one conductive foil sheet 43, and then the conductive foil sheet 43 may be folded and attached to the surface of the other film F. Alternatively, a conductive foil sheet 43 may be attached to one side of the film F.

The conductive foil sheet 43 may be formed by forming a conductive film on the tape by an appropriate means such as vapor deposition, printing, hot stamping, or sputtering.

[0036]

According to the present invention, a sealing effect is maintained while maintaining the strength of the seam portion by forming a conductive foil sheet on a seam portion provided in the middle of a film roll wound in a roll shape. Satisfactorily, and leakage of the contents from the joint portion can be prevented. In addition, by configuring the film joint detection unit in the packaging machine,
The film seam portion can be easily determined, and troublesome operations such as manually selecting defective products can be avoided.

[Brief description of the drawings]

FIG. 1 is a front view of a filling and packaging machine for loading a roll-shaped raw film of the present invention.

FIG. 2 is a side view of a main part of the filling and packaging machine of FIG.

FIG. 3 is a perspective view of a film seam detection unit in FIG. 1;

FIG. 4 is a front view of a film drawn from a rolled film raw material, showing one embodiment of the present invention;

FIG. 5 is a schematic perspective view showing a state in which a film is drawn from a roll-shaped film raw material according to an embodiment of the present invention.

FIG. 6 is a perspective view showing a joint portion of a film provided in the middle of a film raw material according to another embodiment of the present invention.

FIG. 7 is a perspective view of a main part of a film in a sealed state according to an embodiment of the present invention.

FIG. 8 is a front view of a main part of the seal unit of FIG. 1;

FIG. 9 is a plan view of a main part of the seal unit of FIG. 1;

FIG. 10 is a perspective view of a film edge misalignment detection unit in FIG. 1;

FIG. 11 is a bottom view of a film edge misalignment detection unit in FIG. 1;

FIG. 12 is a front view of a filling and packaging machine showing a conventional example.

FIG. 13 is a schematic perspective view showing a conventional example in a state in which a film is supplied from a roll-shaped film source.

FIG. 14 is a perspective view showing a main part of a conventional example in a sealed state of a film.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Machine stand 2 Holding frame 3 Film guide part 4 Film fold part 5 Vertical seal part 6 First horizontal seal part 7 Second horizontal seal part 8 Cutter part 9 Folding guide 12 Filling mechanism 13 Film connection mechanism 21 Nozzle 34 Small bag discharge Part 35 Film seam detecting part 43 Conductive foil sheet 45 Brush 47 Shooter 48 Sorting plate 48A Support shaft 49 Cylinder 50 Slipping plate F Film R Film winding counter F1 Vertical seal point F2 Horizontal seal point W Contents J Joint point FW Sachet FE packaging bag

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yasuhito Miyazawa 2-2-234 Higashizao, Nagaoka-shi, Niigata Japan Nippon Seiki Co., Ltd. Examiner Ryoichi Mizobuchi (56) References JP-A-58-65654 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B65D 65/00

Claims (2)

(57) [Claims] 1. A packaging device for a raw film having a seam in the middle of the roll-wound raw film material, before
In order to determine the seam portion of the original film, a conductive foil sheet that can be electrically conducted along the width direction of the film at the seam portion is attached and formed. Raw film for packaging equipment. Wherein along the width direction of the film seam portion of the raw film material, according to claim 1, wherein the forming paste the conductive foil sheet on the film front and rear surfaces
Anti-packaging device for a film original.