JPH10316116A - Apparatus for fitting film onto container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an incision neat, allow a predetermined protrusion to be made and facilitate timing alignment for fitting a film onto a container by controlling rotation of a rotary body in contact with a lower part of a timing adjust part by a driving means separate from a driving means of a carrier. SOLUTION: A pair of driving rollers 28 for feeding a film 1 downward with a lower roller 13 provided on a timing adjust part 7c come into contact with the roller 13 on a side of the timing adjust part 7c so that it can freely come closer/farther and also drive rotation by a motor 30 separate from a motor 25 for driving rotation of a third pulley 24. A center distance between the third pulley 24 and the driving rollers 28 is set to be larger than a predetermined size of the cut film 1 to prevent a belt body 19 and the driving rollers 28 from being in contact with the film 1 simultaneously. Therefore, the film 1 which has arrived on the timing adjust part 7c can be synchronized with a carried container independently of the belt body 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for fitting a film to a container which is mainly used when a cap seal or label is attached to a container such as a bottle.

[0002]

2. Description of the Related Art Conventionally, as a means for fitting a cap seal made of a tubular film into a container, for example, a means described in Japanese Patent Publication No. 13332/1994 is known.

[0003] That is, in the apparatus described in the publication, after cutting a long, tubular film folded in a flat shape into a predetermined length, the film is fitted on a mandrel for expanding, and transported. It is configured to be pulled down by the device and further fitted to a container which is sequentially supplied below the mandrel.

[0004]

However, in the above-mentioned conventional apparatus, the film fitted on the mandrel is pulled down at a constant speed over the entire length of the mandrel. If the film slips, there is a disadvantage that the timing of fitting the film to the container is shifted, which causes a trouble.Therefore, when the film is fitted to the container, a timing screw, a star wheel, or the like is used once. The container was stopped, and high-speed processing was limited.

[0005] Therefore, it is conceivable to cut the film in the middle of the mandrel so as to be close to the container. In such a case, since the film has already been spread by the mandrel, the cutting blade is placed around the film. A rotating structure is required, and the cut edge of the film cannot be cut straight and beautifully, and the cut end face becomes irregular.In addition, when the film attached to the container etc. is removed, the cut edge is formed so that it can be easily gripped. There is a disadvantage that it is impossible to provide a predetermined convex portion.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has been made in order to cut a film in a flat state so that a cut end of the film can be made clear and a desired knob can be formed. It is possible to provide a predetermined convex portion in the cut edge, and furthermore, by driving the transfer device and the rotating body by separate driving means, it is possible to easily achieve timing adjustment for fitting the film to the container. The task is to

[0007]

The technical measures taken by the present invention to solve the above problems are as follows. That is, the tubular film 1 folded in a flat shape is cut into a predetermined size by a cutter device 4, and the cut film 1 is fitted to a mandrel 7 for film expansion, and fitted to the mandrel 7. To move the film 1 down
A transfer device 15 that is rotationally driven by the driving means 25 is provided,
Moreover, in the film fitting device for fitting the film 1 to the container 32 which is sequentially conveyed downward, the mandrel 7 has a timing adjusting portion 7c which projects downward from the transfer device 15. A rotating body 28 is provided, which is in contact with the lower side of the timing adjusting section 7c. The rotating body 28 is controlled in rotation by a driving means 30 separate from the driving means 25, and rotates with the transfer device 15. The structure is such that the body 28 does not come into contact with the film 1 at the same time.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 2, reference numeral 1 denotes a long film formed by forming a soft and thin synthetic resin film (for example, a heat-shrinkable film such as polyester, polystyrene, polyvinyl chloride, and polypropylene) into a tubular shape. It is in a folded state. Reference numeral 2 denotes a film roll around which the long film 1 is wound. Reference numerals 3 and 3 denote a pair of drive rotatable feeding rollers as feeding means for sequentially feeding the long film 1 from the film roll 2 via the guide rollers 5 and the like to a predetermined cutting position.

Reference numeral 4 denotes a cutter device. The cutter device 4 can cut the film 1 into a predetermined size L1 by bringing two cutter blades 4a and 4b to face each other and relatively approaching each other. It is provided below the rollers 3. At the cutting position from the feed roller 3 by the cutter blades 4a and 4b, a leaf spring-shaped inner guide A for pushing the long film 1 from the inside is inserted inside the long film 1.

Reference numeral 6 denotes a detection sensor for detecting a predetermined mark printed on the long film 1 to be fed, and is provided between the guide roller 5 and the feeding rollers 3, 3. Accordingly, in order to cut the long film 1 at a predetermined position, the feeding rollers 3 and 3 are controlled to stop interlockingly based on a signal from the detection sensor 6.

Reference numeral 7 denotes a film spreading mandrel provided below the feeding rollers 3 and 3 and has an inclined upper portion 7a having a larger diameter toward the lower side and a substantially cylindrical body 7b. I have. On both sides of the mandrel 7, a small guide roller 9, locking rollers 10 and 11 at a substantially central position, and a lower guide roller 13 are rotated from the upper side to the lower side, respectively. It is provided freely.

Reference numeral 15 denotes a transfer device for moving the film 1 fitted on the mandrel 7 downward. The transfer device 15 includes a pair of rotary members 16 for pulling down on both sides of the mandrel 7. The lowering rotating body 16 is configured by wrapping a belt body 19 around a plurality of pulleys so as to be freely rotatable and rotatable so that the mandrel 7 can be supported by the plurality of pulleys.

That is, the upper first pulley 20 and the second pulley 21 for locking the locking roller 10 are attached to the arm 23, and the upper part of the belt body 19 contacts the upper part 7a of the mandrel 7. So that the second pulley 21 is centered.
The lower third pulley 24 locks the locking roller 11. Note that a lower portion of the body portion 7b of the mandrel 7 is a timing adjusting portion 7c protruding below the belt body 19.

Reference numeral 25 denotes a motor for rotationally driving the third pulley 24. By rotating and driving the third pulley 24, the belt body 19 can be circulated and rotated. The motor 25 is controlled by the control device 27.

Numeral 28 is a drive roller as a pair of rotating members for feeding the film 1 downward with the lower roller 13 provided in the timing adjusting section 7c. The driving roller 28 is provided on the timing adjusting section 7c side. A motor which comes into contact with the roller 13 so as to be able to freely contact and separate from the roller 13 and which is separate from the motor 25
The rotation is driven by 30. The motor
30 is also controlled by the control device 27.

Also, as shown in FIG.
The center distance L2 of the drive roller 28 is set to be larger than a predetermined dimension L1 of the film 1 so that the belt body 19 and the drive roller 28 do not contact the film 1 at the same time.

Reference numeral 31 denotes a transport conveyor disposed below the mandrel 7 for continuously supplying a container 32 as an object to be fitted to the lower portion of the mandrel 7 sequentially in conjunction with the driving roller 28. is there.

The tubular film fitting device according to the present embodiment has the above-described configuration. Next, the case where the above device is used will be described.

First, the long film 1 is fed downward from the film roll 2 by the driving rotation of the feeding rollers 3, 3, and the detection sensor 6 detects a predetermined mark, and stops the driving rotation of the feeding rollers 3, 3. At this time, the front end of the long film 1 is opened by the inner guide A and inserted into the upper end of the mandrel 7. Next, the cutter device 4
Thereby, the long film 1 is cut into a predetermined length.

When cutting the film 1, the film 1
Is not greatly opened and is still folded flat, so that the film 1 can be cut cleanly and quickly by the two cutter blades 4a and 4b, for example, a straight cut edge. .

Next, the cut film 1 is pulled down along the mandrel 7 by rotating the belt 19. When the film 1 is pulled down along the mandrel 7,
Its full length is expanded to a sufficiently large diameter.

The center distance L2 between the third pulley 24 and the driving roller 28 is set larger than the length L1 of the film 1 so that the belt 19 and the driving roller 28 do not contact the film 1 at the same time. The belt body
After passing through the belt 19 and reaching the timing adjusting portion 7c, the film 1 is not forcibly pulled down by the belt body 19 and the driving roller 28, and is then moved to a conveyor irrespective of the belt body 19 after a so-called idle state. Synchronously with the container 32 conveyed by the apparatus 31, it is pulled down by the high-speed rotating drive roller 28 that comes into contact with the container 32, and instantly falls and is securely fitted to the container 32 conveyed by the conveyor apparatus 31. .

Further, in the present invention, the rotating body for pulling down the film 1 fitted on the mandrel 7 is not limited to the belt-shaped one as in the above embodiment, but may be a roller type, for example. The specific configuration does not matter.

Further, in the above-described embodiment, the drive roller 28, which constantly rotates at a predetermined speed, is provided so as to be capable of coming into contact with and separating from the roller 13 on the timing matching portion 7c side. It may be configured to rotate intermittently without moving in the direction in which it moves. The rotating body is a drive roller
The configuration is not limited to 28, and a configuration in which the belt body is rotated may be used.

In the above embodiment, the two cutter blades 4
Although the cutter device 4 for bringing a and 4b closer to each other is used, any cutter that can cut in a flat state, such as a rotary blade that rotates one blade, may be used.

Furthermore, the specific material and size of the film 1 are not limited, and the type of container into which the film is to be fitted is not limited.

[0027]

As described above, the mandrel of the present invention is provided with the timing adjusting portion projecting below the transfer device, and the rotating body contacting the lower portion of the timing adjusting portion is provided. The rotation is controlled by a drive unit separate from the drive unit, and the transfer device and the rotator are configured not to come into contact with the film at the same time. The drive can be controlled independently of the transfer device, and the timing at which the film is fitted to the container can be easily and reliably taken, so that higher-speed processing can be performed.

Moreover, since the film is cut in a flat state, it is necessary to cut the cut portion of the film straight and neatly or to change the shape of the cutting blade so as to provide a knob. Becomes possible.

[Brief description of the drawings]

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

FIG. 2 is a front view showing the whole.

[Explanation of symbols]

1 ... film, 4 ... cutter device, 7 ... mandrel, 7c
… Timing adjustment unit, 15… Transfer device, 25… Motor (drive unit), 28… Drive roller (rotary body), 30… Motor (drive unit)

Claims (1)

[Claims] A tubular film (1) folded in a flat shape is cut into a predetermined size by a cutter device (4),
The cut film (1) is fitted on a mandrel (7) for expanding the film, and the film (1) fitted on the mandrel (7) is rotated by driving means (25) to move the film (1) downward. A driving device (15) for driving is provided, and
In the film fitting apparatus for fitting a film (1) to a container (32) which is successively transported downward, the mandrel (7) projects downward from a transfer device (15). A timing adjusting section (7c) is provided, and a rotating body (28) is provided in contact with a lower side of the timing adjusting section (7c). The rotating body (28) is separate from the driving means (25). The rotation is controlled by the body driving means (30),
A film fitting device for a container or the like, wherein the transfer device (15) and the rotating body (28) are configured so as not to come into contact with a single cut film (1) at the same time. .