JPH09315411A - Device for feeding film-shaped article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly feed a film by providing a spraying means to spray the gas for preventing a film-shaped body from being wound around a roller between a roller groove of the roller having the roller groove and the film- shaped body, or between a recessed part between the rollers which are arranged separately and concentrically and the film-shaped body. SOLUTION: Air pipes 55, 55 as a spraying means of the gas for preventing winding which is extended horizontally in the axial direction of roller shafts 13a, 14a are stretched on right and left sides above an opening part 32 across a film 6, and hole-shaped or slitshaped discharge parts 55a... to discharge the air (e) as the gas for preventing winding are formed between roller grooves 13b, 14b in feed rollers 13, 14 and the film 6 in the right and left air pipes 55, 55. The air (e) of the prescribed pressure is fed into the air pipe 55 when the film 6 is held and carried, and the static electricity which is charged during the peeling from an untreated film is discharged to surely prevent the film 6 from being wound around the rollers 13, 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a film-like body feeding device for nipping and conveying a packaging film or other film-like body with a pair of feed rollers.

[0002]

2. Description of the Related Art Conventionally, as a film-like material feeding device of the above-mentioned example, there is a device having a structure shown in FIG. That is, this conventional device (see FIG. 7) has a heat seal portion 71 in advance.
Double-layered bag-shaped packaging film 7 in which
2 is sandwiched and conveyed downward from above by a pair of synthetic rubber or NBR feed rollers 75 and 76 fitted to roller shafts 73 and 74, and is opposed to a receiving head 77 provided at a lower portion of the rollers. The cutting cutter 78 cuts a predetermined portion.

In the conventional apparatus shown in FIG. 7, the above-mentioned film 72 is provided with an original film film as its supply source, and the above-mentioned film 72 is sequentially fed out from the original film film, and static electricity is generated during this feeding ( Peeling electrification)
The pair of feed rollers 7 in the state of being charged with static electricity
Since it is supplied between the rollers 5 and 76, static electricity causes the film 72 to move the above-mentioned film 72 at the roller-opposing portion.
There is a problem in that the phenomenon of winding around 6 occurs and smooth film feeding is hindered.

In order to solve such a problem, a device having the structure shown in FIG. 8 has been invented. That is, the above-mentioned roller shafts 73 and 74 have roller grooves 79 and 80.
A pair of feed rollers 81 and 82 made of synthetic rubber or NBR having the above are fitted, and the scraper 83 is provided near the nipping and feeding portion by the pair of feed low rollers 81 and 82 by utilizing the above-mentioned roller grooves 79 and 80. , 84.

However, even with the structure shown in FIG. 8, it is difficult to properly separate the film 72 electrostatically attracted to the feed rollers 81 and 82 by static electricity. There is a problem in that the film is not wrapped around the feed rollers 75 and 76 and smooth film feed cannot be achieved. It should be noted that a configuration in which the electrostatic treatment agent is sprayed in the film transport system between the film original film and the sandwiching and feeding section is also conceivable. is there.

[0006]

According to a first aspect of the present invention, in a device for conveying a film-like body by a feed roller, a gas (air or N ₂ gas) for preventing the film-like body from being wrapped around the roller. By providing a spraying means for spraying an inert gas), the film-like material can be prevented from being wrapped around the roller by this gas, and a smooth film-feeding device can be achieved. For the purpose of providing.

According to a second aspect of the present invention, in addition to the object of the first aspect of the invention, a roller having a roller groove is disposed between the roller groove and the film-like body or coaxially. By blowing the above-mentioned gas between the recesses between the rollers and the film-like body, the film-like body can be appropriately blown by effectively utilizing the above-mentioned roller grooves or inter-roller recesses. The purpose is to provide a device.

According to the invention of claim 3 of the present invention, in addition to the object of the invention of claim 2, between the roller groove and the film-like body or between the roller recess and the film-like body. By providing the guiding means for guiding the gas,
Guide the gas from the blowing means to the optimum part with the guide means,
An object of the present invention is to provide a film-shaped body feeding device capable of significantly improving the winding prevention efficiency.

[0009]

According to a first aspect of the present invention, there is provided a film-shaped material feeding device for feeding a film-shaped material with a feed roller, wherein the film-shaped material is prevented from being wound around the roller. It is characterized in that it is a device for feeding a film-like body, which is provided with a blowing means for blowing a working gas.

According to a second aspect of the present invention, in addition to the structure of the first aspect of the invention, the spraying means is:
A film-like body feeding device that blows gas between the film-like body or between the roller groove and the film-like body of a roller provided with a roller groove. Is characterized by.

According to the invention of claim 3 of the present invention, in addition to the structure of the invention of claim 2, the invention is provided between the roller groove and the film-like body or between the roller recess and the film-like body. It is characterized in that it is a film-shaped body feeding device provided with a guiding means for guiding gas.

[0012]

According to the first aspect of the present invention, in the feeding device for feeding the film-like body by the feed roller, the above-mentioned spraying means is for preventing the film-like body from being wrapped around the roller. Spray gas. As a result, the static electricity charged in the film-like body can be blown off by the above-mentioned gas, the winding of the film-like body around the roller can be prevented, and smooth film feeding can be achieved. There is.

According to the invention described in claim 2 of the present invention,
In addition to the effect of the invention described in claim 1, the above-mentioned spraying means sprays the above-mentioned gas between the roller groove and the film-shaped body or between the inter-roller recess and the film-shaped body. There is an effect that gas can be appropriately sprayed by effectively utilizing the above-mentioned roller groove or inter-roller recess without changing the roller structure.

According to the third aspect of the present invention,
In addition to the effect of the invention described in claim 2, since the above-mentioned guiding means is provided, the gas for preventing wrapping from the blowing means can be guided to the optimum portion by this guiding means, There is an effect that it is possible to achieve both a reduction in consumption and a great improvement in winding prevention efficiency.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The drawing shows an apparatus for providing a packaging film in an opening box as an example of a configuration provided with a film-like material feeding device of the present invention. In FIG. 1, a large number of rollers 3 are horizontally mounted between left and right frames 1 and 2. Then, the transporting device 4 for transporting the corrugated cardboard box A as an opening box in the horizontal direction is configured, while the film loading section 5 on the back side has a double-layer type bag-shaped packaging film 6 (hereinafter simply referred to as a film). Is provided, and the above-mentioned film 6 fed from the film original fabric 7 is provided with a plurality of guide rollers 8,
It is configured so as to lead between the pair of feed rollers 13 and 14 of the feed device 12 via 9, 10, and 11.

Guide rollers 10, 11 located at the upper part
A film welding device 15 for forming a seal portion b (see FIG. 3) by heat-sealing the double-layered film 6 is disposed in the middle of the space. The film welding device 15 is provided with a holding cylinder 17 having a heating head 16 at the lower end of a piston rod and a receiving cylinder (not shown) having a receiving head 18, and is made of a synthetic resin such as polyvinyl chloride or polyethylene and is transparent or semi-transparent. The transparent film 6 is heat-welded over its entire width.

On the other hand, the pair of feed rollers 13 and 14 described above.
A cutting cutter 19 and a receiving head 20 are disposed in the lower part of the device so as to face each other, and the film 6 immediately below the cutting part by the cutting cutter 19 is adsorbed to the lower part of each of these elements 19 and 20 before the cutting. An opening device 21 for performing opening processing is provided.

The opening device 21 includes an adsorbent 22 for adsorbing the outer surface of one end of the film 6 formed in a bag shape, and an adsorbent 23 for adsorbing the outer surface of the other end of the film 6 formed in a bag shape. Two opening cylinders 24 (however, only one cylinder on the side of the suction element 22 is shown in the drawing) that drives the suction elements 22 and 23 to move toward and away from each other, and a guide means 25 are provided, and suction holding is performed in advance after cutting is completed. The formed film 6 is shown in FIG.
As shown by an imaginary line a, the bag 6 is opened in a bottomed bag shape to form the above-mentioned film 6 as a packaging bag 26. Here, the sealing portion b (see FIGS. 3 and 6) is formed on the bottom of the packaging bag 26.

A bag pushing device 29 having a pushing member 27 and a pushing cylinder 28 is arranged above the packaging bag 26 having an open upper surface, while a lift for raising and lowering the cardboard box A at the bag insertion position. Lifting device 3 including member 30
1 is provided so that the cardboard box A can be internally provided with the packaging bag 26 by the lifting operation of the cardboard box A by the lift member 30 and the descent operation of the packaging bag 26 by the pushing member 27.

A feeding device 12 for conveying the above-mentioned film 6
Is constructed as shown in FIGS. 2, 3 and 4. That is, a horizontal device frame 33 having an opening 32 formed by opening the passage portion of the film 6 is provided.
A fixed frame 34, 34 for supporting rollers is provided on one lower side of the
The roller shaft 13a is horizontally mounted via the. On the other side of the lower portion of the device frame 33, a roller shaft 14a is horizontally mounted horizontally via movable frames 35, 35 for supporting the rollers.

Thus, the above-mentioned roller shafts 13a, 14a
Feed rollers 13 and 14 made of synthetic rubber or NBR, which are provided with annular roller grooves 13b and 14b that are recessed in a concave shape, are fitted in. One of the feed rollers 14 is configured to be able to come into contact with and separate from the other feed roller 13. That is,
On the upper end of the movable frame 35 described above, a supporting shaft 36 serving as a swinging fulcrum is provided, while a swinging cylinder 39 is connected to a pin 37 on the movable frame 35 side through an attachment 38. The head cover 39a side is connected to the bracket 42 fixed to the bent portion 33a of the device frame 33 via the connecting pin 40 and the connecting member 41, and one of the feed rollers 14 is moved to the position shown in FIG. As shown in FIG. 3, the feed roller 13 is separated from the other feed roller 13, and the one feed roller 14 is brought into contact with the other feed roller 13 as shown in FIG. are doing.

As shown in FIG. 4, both ends of the roller shaft 13a of the above-mentioned feed roller 13 are rotatably supported by bearings 43 and 43, and both ends of the roller shaft 14a of the feed roller 14 are similarly bearings 44 and 4.
4 is supported. A drive motor 46 is connected to one end of the roller shaft 13a via a coupling 45, while the other end of the roller shaft 13a and the roller shaft 14 are connected to each other.
A driving gear 47 and a driven gear 48, which are capable of meshing with each other, are separately fitted to the corresponding portions of a, and when the feed rollers 13 and 14 are brought into contact with each other by the swing cylinder 39 (see FIG. 3). To
These gears 47 and 48 mesh with each other so that the pair of feed rollers 31 and 14 are synchronously rotated in the film feed direction (arrow direction in FIG. 3).

On the other hand, a rodless cylinder 49 as a cutting blade actuator is attached to the lower part of one side of the above-mentioned device frame 33, the above-mentioned cutting cutter 19 is attached to this rodless cylinder 49 via a cutter holder 50, and this cutting is performed. A receiving head 20 having the same width as the entire length of the cutter is arranged at a portion facing the cutter 19.
Is configured to be able to move forward and backward by the head cylinder 51. 2 and 3, reference numerals 52 and 53 are guide blocks that slidably hold the cutting cutter 19 up and down,
Reference numeral 54 is a bracket for mounting the head cylinder 51.

By the way, air pipes 55, 55 are horizontally installed on both left and right sides above the opening 32 which separates the film 6 and which extends horizontally in the axial direction of the roller shafts 13a, 14a and serves as a means for blowing a gas for preventing wrapping. The left and right air pipes 55, 55 are holes for discharging air e (see FIG. 3) as an example of a gas for preventing wrapping between the roller grooves 13b, 14b of the feed rollers 13, 14 and the film 6. -Shaped or slit-shaped discharge parts 55a are formed. Moreover, guide plates 56, 56 as guide means for guiding the air e between the roller grooves 13b, 14b and the film 6 are attached to the apparatus frame 33.

The left and right guide plates 56, 56 are formed in a substantially symmetrical structure, and the left guide plate 56 is, as shown in FIG.
A horizontal base 57 attached to the upper surface of the device frame 33.
And a slant portion 59 which is connected to the above-mentioned base portion 57 via the bent portion 58 and is located in the opening 32, and a roller groove of the feed roller 13 which is connected to the slant portion 59 via the bent portion 60. 13b located inside 13b, and is configured to guide the air e discharged from the discharge part 55a of the air pipe 55 between the comb tooth part 61 and the film 6.

In this embodiment, the length of the comb tooth portion 61 is set to be substantially equal to the outer diameter of the roller of the feed roller 13, and the comb tooth portion 61 guides air e and the roller groove of the film 6. It is configured so as to have both functions of preventing adhesion to the outer circumference of 13b. The right guide plate 56 is configured to be substantially symmetrical to the left guide plate 56.

An electric insulator such as a synthetic resin may be used as the guide plate 56. If the guide plate 56 is made of a good electric conductor and a part of it is grounded, the film 6 is formed. When it comes into contact with the comb tooth 61,
The static electricity charged on the film 6 can be released to the ground through the guide plate 56 made of a conductor. The above-mentioned air pipes 55, 55 are supported by the guide plate 56 via L-shaped support brackets 62.

The illustrated embodiment is constructed as described above, and its operation will be described below. When the film 6 is unwound from the original film 7 shown in FIG. 1, the film 6 is supplied to the arrangement portion of the film welding device 15 via the guide rollers 8, 9, and 10, so that the film 6 is fed at the same position. The device 15 is driven to heat seal a predetermined portion of the double-layered film 6 to form a seal portion b (see FIG. 3).

The film 6 after the formation of the seal portion b is supplied between the pair of feed rollers 13 and 14 via the guide roller 11, and the rollers 13 and 1 under the contact condition shown in FIG.
4 is driven in the film feed direction, and the film 6 is nipped and conveyed by the pair of feed rollers 13 and 14.

At the time of sandwiching and conveying the film 6 described above, a supply source such as an air compressor provided on the air supply side of the air pipe 55 is driven to supply a predetermined pressure of air to the air pipe 5 described above.
The air e (see FIG. 3) as the wrapping prevention gas is discharged from the discharge portion 55a which is supplied to the inside of the air pipe 5 and is formed in the air pipe 55 and directed in a predetermined direction.

Since this air e is guided by the guide plate 56 and is equally supplied to the left and right between the respective comb-tooth portions 61 and the film 6, the static electricity peeled off and charged at the time of feeding from the above-mentioned film material 7 is charged. Can be blown away by the above-mentioned air e, and the film 6 can be reliably prevented from being wound around the feed rollers 13 and 14, and the film 6 can be blown between the feed rollers 13 and 14 by the above-mentioned air e. Since it is nipped and conveyed straight from the upper side to the lower side, the film 6 does not interfere with the equipment located below the contacting portion of the pair of feed rollers 13 and 14.

In this way, when the film 6 is fed by a predetermined amount while the winding is prevented, the feed roller 1
While the drive of 3, 14 is stopped, the film 6 immediately below the seal part b is cut in the width direction by the cutting cutter 19 as shown in FIG. At this time, the receiving head 20 moves forward as shown by the phantom line in FIG.

Prior to the above-mentioned film cutting, the film 6 slightly below the cut portion is the adsorber 2 of the opening device 21.
Since the film 6 is sucked and held by 2, 23, when the opening device 21 is driven after the film cutting process, the film 6 is opened to form the packaging bag 26 as shown by a phantom line in FIG. Next, when the bag pushing device 29 and the elevating device 31 of FIG. 1 are operated together, the packaging bag 26 can be provided inside the cardboard box A.

In summary, in the feeding device for feeding the film 6 by the feeding roller 13.14, the above-mentioned blowing means (see the air pipe 55) is the roller 13 of the film 6,
A gas (see air e) for preventing wrapping around 14 is sprayed.
As a result, the static electricity charged on the film 6 can be blown off by the gas (see air e), and the film 6 can be prevented from being wound around the rollers 13 and 14.
There is an effect that a smooth film feed can be achieved.

The above-mentioned spraying means (air pipe 55
(See) blows the above-mentioned gas (see air e) between the roller grooves (13b, 14b) and the film 6, so that there is no need to change the existing roller structure.
b, 14b) to make effective use of gas (see air e)
There is an effect that can be sprayed.

Further, since the above-mentioned guiding means (see the guide plate 56) is provided, the blowing means (see the air pipe 55).
The air for preventing wrapping (see air e) from the above can be guided to the optimum portion by this guide means (see guide plate 56),
There is an effect that both the reduction of the consumption amount of the gas (see the air e) and the significant improvement of the wrapping prevention efficiency can be achieved.

In the correspondence between the structure of the present invention and the above-mentioned embodiment, the film-like body of the present invention corresponds to the bag-shaped packaging film 6, and the wrap-around prevention gas is the same in the following.
The spray means corresponds to the air e, the air pipe 55 corresponds to the air pipe 55, and the guide means corresponds to the guide plate 56. However, the present invention is not limited to the configuration of the above-described embodiment.

For example, in the above embodiment, the film 6 is sandwiched and conveyed by the pair of feed rollers 13 and 14, but the film 6 is fed by one of the feed rollers and the driving belt portion in contact therewith. It may be configured as follows. Further, the feed rollers 13 and 14 having the roller grooves 13b and 14b are configured as described above, but the roller shafts 13a and 14 are
When a plurality of rollers are spaced apart on a, the gas may be blown between the inter-roller recesses coaxially spaced apart and the film 6.

As the gas for preventing wrapping, an inert gas such as N ₂ gas may be used in addition to the exemplified air e.
Furthermore, instead of the air pipe 55 described above, the film 6
An air nozzle that directs to a predetermined portion may be disposed so as not to interfere with, and the film-shaped body is replaced by the bag-shaped film 6 of the two-polymerization type for packaging, and a single film or sheet or printing. It may be a film-like body that is easily charged with static electricity, such as paper for paper. For example, a recording magnetic tape or a recording magnetic tape is generally fed out from a magnetic tape raw material having a width of several meters and cut into a predetermined narrow width. Therefore, the feeding of the present invention to a part of a transport path from the magnetic tape raw material. The device may be applied to prevent winding of the tape (film-like body) around the feed roller due to static electricity.

[Brief description of drawings]

FIG. 1 is a schematic view of a film internal device including a film-shaped material feeding device of the present invention.

FIG. 2 is an enlarged view of a main part of FIG. 1;

FIG. 3 is an explanatory view showing a contact state of a pair of feed rollers.

FIG. 4 is a plan view of a main part of FIG.

FIG. 5 is a perspective view of a guide plate.

FIG. 6 is an explanatory view when cutting a film.

FIG. 7 is an explanatory view showing a conventional film-shaped material feeding device.

FIG. 8 is an explanatory view showing a conventional film-shaped material feeding device.

[Explanation of symbols]

 6 ... Film 13, 14 ... Feed roller 13b, 14b ... Roller groove 55 ... Air pipe 56 ... Guide plate e ... Air

Claims (3)

[Claims] 1. A feeding device for a film-like material, which conveys the film-like material with a feed roller, comprising a blowing means for blowing a gas for preventing the film-like material from wrapping around the roller. Feeder. 2. The blowing means supplies gas between the roller groove of a roller having a roller groove and the film-like body, or between the inter-roller recesses and the film-like body which are coaxially spaced apart from each other. The film-shaped body feeding device according to claim 1, which is sprayed. 3. The film-shaped material feeding device according to claim 2, further comprising a guide means for guiding the gas between the roller groove and the film-shaped material or between the inter-roller recess and the film-shaped material.