JPH08119234A - Device and method for fitting cylindrical film to corresponding object - Google Patents

Abstract

PURPOSE: To easily perform a series of high speed operations in such a manner that there is little mistiming, even in the case of continuous film transfer. CONSTITUTION: A film fitting device is provided with a delivery means 3 for delivering a cylindrical film 1 folded into a flat form, a cutting device 4 for cutting the continuous length film 1 being delivered into a predetermined size, a spreading belt device 10 for unfolding the film 1 while being lowered to fit the cut piece of the film 1 over a mandrel 20 provided below the cutting device 4 and a lowering rotating body 24 for lowering the film 1 from the mandrel 20 to fit it to a corresponding object 30 below. A belt transfer device 5 with a belt body 6 for transferring the film 1 to the spreading belt device 10 is provided between the cutting device 4 and the spreading belt device 10 and the distance between the film cutting position A of the cutting device 4 and the film transfer starting position B of the belt transfer device 5 is made not shorter than the length of the cut piece of the film 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention allows a cap seal or label as a flat film to be opened at a predetermined position of an object to be fitted, such as a bottle container, to be fitted automatically and continuously. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for fitting a tubular film on a fitting.

[0002]

2. Description of the Related Art Conventionally, as a device of this type, Japanese Patent Laid-Open No. 63-
Some are described in Japanese Patent No. 29. The device described in the publication is
In order to be able to supply a tubular film folded in a flat shape to the mandrel side for film expansion, a delivery roller provided above the mandrel and a delivery roller provided from the delivery roller and fitted onto the mandrel. A film lowering rotary member that is rotatably driven in contact with the mandrel so that the film can be freely lowered below the mandrel, and is provided between both the feeding roller and the mandrel, and is provided from the feeding roller to the mandrel. And a cutting device for cutting the film fed to the side.

[0003]

However, since the above-mentioned device is configured to intermittently feed the film, it is not possible to feed the film continuously and mount it on an object to be fitted, which is not suitable for high-speed workability. There is a limit.

Further, the above-mentioned apparatus has a structure in which the lower end of the film is fitted onto the upper end of the mandrel, the film is cut by a cutting device, and the cut film is pulled down by a film pulling rotary member. . Therefore, if the film is continuously fed, there is a possibility that the film pulling down rotating body may pull down the film that has not been cut, and the film feeding timing may be deviated, so that the film may be reliably removed from the fitted object. There is a drawback that it cannot fit.

The present invention has been made in view of the above-mentioned problems of the prior art, and even when the film is continuously transferred, the timing thereof hardly shifts, and a series of high-speed operations can be easily performed. The challenge is to be able to.

[0006]

The technical means taken by the present invention to solve the above problems are as follows. That is, the features of the tubular film fitting device on the object to be fitted are that the feeding means 3 for feeding the tubular film 1 folded in a flat shape and the long film 1 fed are set to a predetermined size. A cutting device 4 for cutting, a spreading belt device 10 for opening the film 1 while lowering the film 1 in order to fit the cut film 1 onto a mandrel 20 provided below the cutting device 4, and a mandrel 20. In order to fit the externally fitted film 1 onto the fitting 30 below, a pulling down rotating body 24 for pulling down the film 1 is provided, and between the cutting device 4 and the expanding belt device 10. Is provided with a belt transport device 5 having a belt body 6 for transporting the film 1 to the spreading belt device 10. The cutting position A of the film 1 by the cutting device 4 and the transport of the film 1 by the belt transport device 5 are provided. Distance L2 from start position B Lies in that it is set to a length L3 than the film 1 to be cut.

The expansion belt device 10 includes a pair of breathable suction belts 11 and the flat film 1.
And a suction chamber 13 provided inside each of the suction belts 11 for adsorbing the adsorbent, and the width W of the suction belt 11 is smaller than the width W1 of the flat film 1. A twisting body 14a that bends the film 1 projecting to one side of the suction belt 11 at the time of transferring the film 1 by the use belt 11 is provided on the side of the suction belt 11.

Further, a feature of the method of fitting a tubular film on an object to be fitted is that the tubular film 1 folded in a flat shape is drawn out, and the long film 1 drawn out is fed to the cutting device 4. After the film 1 is cut into a predetermined size, the cut film 1 is opened by a spreading belt device 10 provided below the cutting device 4 while being lowered, and then the film 1 is fitted to the fitting 30. In the method for fitting a tubular film onto a material to be fitted, a belt conveyor having a belt body 6 for transferring the film 1 to the expanding belt device 10 between the cutting device 4 and the expanding belt device 10. A device 5 is provided, and further, a cutting position A of the film 1 by the cutting device 4,
The distance L2 from the transfer start position B of the film 1 by the belt conveying device 5 is set to a length L3 or more of the film 1 to be cut, and the film 1 cut by the cutting device 4 is set by the belt conveying device 5. It is to transfer toward the spreading belt device 10.

[0009]

In the above invention, the film 1 fed by the feeding means 3 is cut by the cutting device 4, and the cutting position A of the film 1 by the cutting device 4 is cut.
And the distance L2 between the transfer start position B of the film 1 by the belt transfer device 5 and the length L3 of the film 1 to be cut are set to be longer than the length L3 of the film 1 to be cut. There is no danger of being pulled by.

After the film 1 is cut, it is dropped onto the belt conveying device 5 and is transferred at a predetermined pitch, and is supplied to the expanding belt device 10. Since the expanding belt device 10 opens the film 1 having a predetermined pitch and fits the film 1 onto the mandrel 20, the feeding timing of the film 1 does not deviate.

Moreover, at least the twisting body 14a for bending the film 1 protruding to one side of the suction belt 11 is
When it is provided on the side of the suction belt 11, the twist body 14 is used when the film 1 is transferred by the suction belt 11.
The film 1 is sequentially bent so that the end 1a of the film 1 protruding from the suction belt 11 is twisted. At this time, the end 1a,
Relative displacement occurs on both side pieces of 1b, both side pieces can be separated from each other, the entire film 1 can be evenly opened in the expanding belt device 10, and the film 1 can be smoothly fitted on the mandrel 20. It becomes possible.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a long film formed by forming a soft and thin synthetic resin film into a tubular shape, which is in a flatly folded state. 2 is the long film 1
It shows the original roll. Reference numerals 3 and 3 are a pair of drive-rotatable feeding rollers as feeding means for feeding the long film 1 sequentially from the original fabric 2 through the guide roller 17 and the like.

Reference numeral 4 denotes a cutting device for cutting the film 1 fed out by the feeding rollers 3 and 3 into a predetermined length. The cutting device 4 cooperates with the fixed cutter blade 4a and the fixed cutter blade 4a to cut the film 1. It is composed of a rotary cutter blade 4b for cutting and is provided below the feeding rollers 3 and 3. Reference numeral 8 denotes a detection sensor for detecting a predetermined mark printed on the long film 1 which is fed out, and is provided above the guide roller 17. Therefore, in order to cut the long film 1 at a predetermined position, the cutting device 4 and the feeding rollers 3 are controlled so as to be interlocked with each other based on the signal from the detection sensor 8.

Reference numeral 5 denotes a belt transporting device for transporting the film 1 cut by the cutting device 4 downward, and the transporting device 5 has a pair of left and right belt members 6 and 6 for sandwiching the film 1 as shown in FIG. And a plurality of first to fourth small pulleys 7a, 7b, 7c, 7d for guiding the belt bodies 6, 6 and a drive pulley 9 at the bottom. Further, as shown in FIG. 3, the belt bodies 6 and 6 are wound around the both ends of the first to fourth small pulleys 7a, 7b, 7c and 7d and the lowermost drive pulley 9 with a space therebetween. There is. The uppermost first small pulleys 7a are provided so as to have a distance L1 from each other, and
And the third small pulleys 7b, 7c are arranged on both sides of the belt body 6,
The film 1 is configured to be pressed via 6.

The distance L2 between the cutting position A of the film 1 and the second guide roller 7b in the cutting device 4 is set to be equal to or longer than the length L3 of the film 1 to be cut.
The position of the second guide roller 7b is the transfer start position B of the film 1. Further, the second guide roller 7b is provided so as to be movable in the vertical direction, and the distance L2 can be changed and adjusted by moving the guide roller 7b in the vertical direction. The drive pulley 9 is rotatably provided, and the belt members 6 and 6 are rotationally driven at the same speed in the arrow direction.

Reference numeral 10 denotes a spreading belt device for opening the cut film 1 while lowering it, and a pair of suction belt members 11, 11 wound around the drive pulley 9 and having a large number of suction openings 11a. And large and small guide rollers 12a and 12b around which the belt bodies 11 are wound, and a pair of vacuum suction chambers 13 and 13 provided inside the suction belt bodies 11, respectively. The suction belt bodies 11, 11 are
As shown in FIG. 3, it is provided between the belt bodies 6 and 6 and is wound around the drive pulley 9 having the same diameter as that of the belt bodies 6 and 6, so that the transfer speed is substantially the same as that of the belt bodies 6 and 6. Rotate.

The width W of the suction belt body 11 is shown in FIG.
As shown in (b), the film 1 is provided so as to have a width smaller than the width W1 of the film 1 in a flat state.
Both ends 1a and 1b of the film 1 project from the vacuum suction chambers 13 and 13 when passing through. Further, the vacuum suction chambers 13 are set such that the upstream portions thereof are close to each other, but the downstream portions thereof are wider toward the lower end side.

Reference numerals 14a and 14b denote twisted bodies, which are provided on both sides of the vacuum suction chamber 13 and at the upper and lower positions so as to be located on the side of the suction belt body 11. That is,
The upper twist 15a has an upper edge 15 inclined so that one end 1a of the film 1 protruding from the vacuum suction chamber 13 can be bent. Further, the lower twist body 14b is arranged in the opposite direction to the one end portion 1a of the film 1.
The upper edge 15 is inclined in the opposite direction to the upper edge of the twisted body 14a so as to bend. Moreover, the twisted body at the top
Also in 14a or the lower twisted bodies 14b, the inclination directions of the respective upper edges 15 are opposite to each other so that one end 1a and the other end 1b are bent in opposite directions.

Reference numeral 20 denotes a mandrel provided below the expanding belt device 10, which is formed in an inclined shape having a larger diameter toward the lower side, and the front end side is desired between the lower ends of the suction belt 11. There is. In addition, a plurality of small rollers 21 and 22 are axially supported on both side surfaces of the mandrel 20, respectively.

Numerals 24 and 24 denote a pair of rotating bodies for pulling down the mandrel 20 sandwiched between the mandrel 20 from the upper side to the lower side at the left and right sides of the mandrel 20. It is constructed by being rotatably wound in a circulation drive. The upper part of the belt main body 26 has a gap with the mandrel 20, and the intermediate pulley 25 is rotatably supported in a fixed position while being fitted between the small rollers 21 of the mandrel 20 from the outside, whereby the mandrel is rotatably supported. 20 is held in place.

A tubular film fitting device 28 is mainly constituted by the feeding roller 3, the cutting device 4, the belt conveying device 5, the expanding belt device 10, the mandrel 20 and the lowering and rotating body 24. There is. Reference numeral 29 denotes a transfer conveyor arranged below the mandrel 20, which continuously supplies bottle containers 30 as fittings to the lower part of the mandrel 20 in sequence.

In FIGS. 6 and 10, reference numeral 32 denotes a film positioning device, which is provided at a position downstream of the film fitting device 28, has a rotary table 33 attached to a rotary shaft 32a, and a film pressing device. And a section 36. The film pressing portion 36 is provided with a cam follower 40 that rolls along a cam groove 39 of a cam plate 35 attached to the rotating shaft 32a side, and a pair of guide bars 38 that are erected on the rotating shaft 32a side. It has a pressing body 41 that is fitted up and down so as to be able to move up and down.

Below the holding body 41, a plurality of support bars are provided.
An annular disc 45 is attached via 44, and a holding rod 46 is slidably inserted into the holding body 41 so as to be located at the center of the disc 45. The presser bar 46 is urged downward by a weight 48 attached to the upper end thereof.

As shown in FIGS. 7 and 8, the bases of a plurality of pressing arms 50 are pivotally supported by bolts 51 on the lower surface of the disk 45. That is, the tip end side of each pressing arm 50 is desired in the opening 45a of the disc 45, and the protrusion 53 is provided on the base side of each pressing arm 50, and each pressing arm 50 is
The tip end side is biased inward by the base and the rubber ring 54 fitted onto the respective projections 53. The opening of the disc 45
The diameter D of 45 is larger than the diameter of the fitting portion of the bottle container 30. Reference numeral 55 is a stopper that regulates the inward position of each pressing arm 50.

Reference numeral 58 is a heating device for heating the film 1 fitted on the bottle container 30 as shown in FIG. 10, and is arranged downstream of the film positioning device 32.

Next, the case where the film 1 is mounted on the bottle container 30 using the tubular film fitting device according to the present invention will be described. First, as shown in FIG. 10, the film stock 2 is provided with a roll feeder provided in the vicinity of the tubular film fitting device 28.
After being attached to 60, when the long film 1 is continuously fed downward from the original fabric 2 by the driving rotation of the feeding rollers 3 and 3, the cutting device 4 cuts the long film 1 in conjunction with it.
When the long film 1 is cut, the leading end of the film 1 does not come into contact with the belt bodies 6 and 6 of the belt conveying device 5, so that the long film 1 is not forcibly pulled by the belt bodies 6 and 6. Instead, it can be cut in place.

Further, the cut film 1 drops, is sandwiched between the belt members 6 and 6 and is conveyed downward and is supplied to the expanding belt device 10. The film 1 has belt members on both sides thereof. Since it is sandwiched by 6, 6, it is stably transferred in parallel to the suction belt members 11, 11. Since the transfer speed of the expanding belt device 10 is set to be the same as the transfer speed of the belt transport device 5, the transfer of the film 1 can be performed reliably without deviation, and the vacuum suction chamber
By the suction force of 13, the suction belt body 11 sucks both sides of the flat film 1 and sends the film 1 to the downstream side. When the film 1 reaches the upper twisted body 14a, the ends 1a and 1b on both sides thereof slide on the edges 15 of the twisted body 14a, respectively, so that they are bent in mutually opposite directions. Even if both pieces of the film 1 are attached in a flat shape due to blocking or the like, when the end portions 1a and 1b are bent,
Both side pieces of the film 1 move relative to each other and are forcibly displaced.

Next, when the film 1 reaches the lower twisted body 14b, it is bent in the opposite direction to the above, and the film 1 is transferred while being twisted.
It becomes easy to separate the both side pieces. Further film 1
Is sucked into the vacuum suction chamber 13 and opens. At this time, the both end portions 1a and 1b of the film 1 have the twisted body 14
Due to the action of a and 14b, since the both side pieces are separated from each other at one end, they can be easily separated even if they come into contact again.

If the twisted bodies 14a and 14b are not provided, both side end portions 1a and 1b of the film 1 are in a stuck state as shown in FIG. However, in this embodiment, since the film 1 is opened over the entire film 1 as described above, the film 1 can be fitted onto the mandrel 20 surely and smoothly.

Next, each of the descending rotors 24 has its belt main body.
The film 1 fitted onto the mandrel 20 is pulled down below the mandrel 20 by the driving rotation of 26. The rotation speed of the belt main body 26 is set to be approximately four times the rotation speed of the suction belt 11 of the expanding belt device 10 so that the film 1 can be pulled down quickly. The film 1 is pulled down along the mandrel 20 and passes through the mandrel 20, so that the entire length of the film 1 is expanded to a sufficiently large diameter and drops downward.

The film 1 pulled down by the pulling down rotating body 24 (belt body 26) falls on the bottle container 30 transferred on the transfer conveyor 29 in a state synchronized with the pulling down operation of the film 1. Then, the bottle container 30 is fitted into the upper mouth portion of the bottle container 30. At this time, the film 1 is located above the bottle container 30 due to the elastic force of the film 1 in the flat direction due to the folding tendency and does not drop downward. Further, when the lower pulley 25 of the lowering rotor 24 is driven to rotate, the small roller 22 on the side of the mandrel 20 that comes into contact therewith simply idles, and the mandrel 20 falls downward. There is no.

Further, when the bottle container 30 in which the film 1 is fitted is transferred to the film positioning device 32 by the transfer device 29, each bottle container 30 is placed on the rotary table 33 and rotated. During this rotation, the pressing mechanism causes the pressing body 41 to descend along the guide bar 38, and first, the lower end portion 46 of the pressing bar 46 is
a enters the mouth portion 30a of the bottle container 30 and fixes the bottle container 30 at a fixed position. Further, when the pressing body 41 descends with the rotation of the rotating shaft 32a, the bottle container 30 is placed in the opening 45a of the disc 45.
The mouth portion 30a of is inserted. When the pressing body 41 descends, each pressing arm 50 abuts the bottle container 30, and the pressing arm 50 slides in the bottle container 30 and swings in the expanding direction against the tension of the rubber ring 54.

As shown in FIG. 9C, the ring body 57 is simply used.
When the film 1 is lowered by lowering the film 1, one side of the film 1 may enter into the ring body 57 and the film 1 may be twisted and cannot be lowered, but as shown in (a) and (b) of FIG. Since each pressing arm 50 expands along the surface of the bottle container 30, each pressing arm 50 contacts the film 1 and the film 1 can be lowered horizontally to a predetermined position.

After lowering the film 1 to a predetermined position, contrary to the above, the pressing body 41 is raised, the disc 45 is separated from the mouth 30a of the bottle container 30, and the bottle container 30 is rotated by the rotary table 33.
Is again mounted on the transfer device 29. Bottle container 30 is a transfer device
In the process of being transferred at 29, the film 1 is pre-contracted and positioned by the pre-heater 61. Furthermore, bottle container 30
Is transferred to the heating device 63 and the film 1 is completely shrunk.

In the above, in the present embodiment, the belt conveying device 5 receives the cut film 1 and supplies it to the expanding belt device 10, so that the receiving function of the film 1 and the opening function are respectively performed. It is performed by a separate device. Therefore, the suction belt of the expansion belt device 10
Since 11 is provided with a suction port, a strong and thick one can be adopted. Further, the belt body 6 of the belt conveying device 5 adopts a thin body which is easily bent and is low in cost,
According to the length L3 of the film 1, it is possible to easily adjust the interval L2 by raising and lowering the guide roller 7b, and to reliably receive the film 1.

The present invention is not limited to the above embodiment, but the pulling down rotating body 24 for pulling down the film fitted on the mandrel 20 is limited to the belt-like one as in the above embodiment. However, for example, a roller type may be used, and its specific configuration is not limited.

Further, in the present invention, the specific material and size of the film 1 are not limited, and the kind of articles to be fitted with the film is not limited to containers such as bottles. Moreover, the cutting device 4 may be one that can cut the film 1 by horizontally approaching the two cutter blades 14 and 14a to each other.

[0038]

As described above, according to the present invention, between the cutting device and the expanding belt device, the belt conveying device having the belt body for transferring the film to the expanding belt device is provided. The distance between the cutting position of the film by the cutting device and the transfer start position of the film by the belt conveyor is
Since it is set to the length of the cut film or more,
The film will not be unintentionally pulled down when the film is cut, and the transfer of the film immediately after cutting is
Performed by belt conveyor. Since the expanding belt device opens the film transferred by the belt conveying device at a predetermined pitch, even when the film is continuously transferred, the timing of the film does not shift and a series of high-speed operations can be easily performed. There are advantages that can be done to.

Further, the expanding belt device comprises a pair of breathable suction belts and suction chambers provided inside the suction belts for sucking the flat film, respectively, and The width of the suction belt is provided smaller than the width of the flat film, and at the time of transfer of the film by the suction belt, at least a twisted body that bends the film protruding to one side of the suction belt,
Since it is provided on the side of the suction belt, it is possible to easily and surely separate both sides of the flat film when transporting the film even if the flat film is blocked and adheres. The film can be smoothly fitted on the mandrel and the fitting object.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an embodiment of the present invention.

FIG. 2 is a front view showing the main part.

FIG. 3 is a side view showing the main part.

FIG. 4 shows a state in which a film is bent by the twisted body, (a) is a front view of a main part, and (b) is a cross-sectional plan view.

FIG. 5 shows a state in which a film is opened in a suction chamber, (a) is a sectional plan view according to the present invention, and (b) is a sectional plan view showing a comparative example.

FIG. 6 is a sectional front view showing a film positioning device.

FIG. 7 is a front view showing the main part.

FIG. 8A is a bottom view including a partial cross section of the film positioning device, and FIG. 8B is a perspective view thereof.

FIG. 9 shows a state in which the film is fitted onto the bottle container,
(A) is a sectional view, (B) is a partial sectional front view, and (C) is a sectional view showing a comparative example.

FIG. 10 is a schematic plan view showing the whole of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Film, 1a, 1b ... Both ends, 3 ... Rolling-out roller (feeding-out means), 4 ... Cutting means, 10 ... Spreading belt device, 11
… Suction belt, 14a… Twisted body, 20… Mandrel, 24
... Rotating body for withdrawal, 30 ... Bottle container (fitting object), A ... Cutting position, B ... Transfer starting position, L2 ... Distance, L3 ... Length, W,
W1 ... width

Claims (3)

[Claims] 1. A feeding means (3) for feeding a tubular film (1) folded into a flat shape, and a cutting device (4) for cutting the long film (1) fed out into a predetermined size. Equipment for cutting the cut film (1) (4)
And a film (1) externally fitted to the mandrel (20) and a spreading belt device (10) for opening the film (1) while lowering the film so as to be externally fitted to the mandrel (20). And a rotating body (24) for pulling down the film (1) so that the film (1) can be mounted on the lower mounted article (30),
A belt conveying device (5) having a belt body (6) for transferring the film (1) to the expanding belt device (10) between the cutting device (4) and the expanding belt device (10). Is provided, and the distance (L2) between the cutting position (A) of the film (1) by the cutting device (4) and the transfer start position (B) of the film (1) by the belt transport device (5) is A tubular film fitting device for an object to be fitted, which is provided so as to be set to a length (L3) or more of a film (1) to be formed. 2. The expansion belt device (10) comprises a pair of breathable suction belts (11) and an inner side of each suction belt (11) for sucking the flat film (1). The suction belt (11) is provided with a suction chamber (13) provided therein, and the width (W) of the suction belt (11) is smaller than the width (W1) of the flat film (1). At the time of transfer of the film (1) by the (11), a twist body (14a) for bending the film (1) projecting at least on one side of the suction belt (11) is provided on the side of the suction belt (11). The tubular film fitting device for a fitting object according to claim 1, which is provided. 3. A tubular film (1) folded in a flat shape is unrolled, and the long film (1) unrolled is cut into a predetermined size by a cutting device (4).
The cut film (1) is opened while being lowered by a spreading belt device (10) provided below the cutting device (4), and then the film (1) is fitted to the fitting object (30). In the method of fitting a tubular film onto an object to be fitted, the film (1) is transferred to the expanding belt device (10) between the cutting device (4) and the expanding belt device (10). A belt conveyor (5) having a belt body (6) for
Further, the distance (L2) between the cutting position (A) of the film (1) by the cutting device (4) and the transfer start position (B) of the film (1) by the belt transport device (5) is cut. The film (1) is set to have a length (L3) or more, and the film (1) cut by the cutting device (4) is directed to the expanding belt device (10) by the belt transport device (5). A method for fitting a tubular film onto an object to be fitted, characterized by transferring the film.