JPH0939927A - Method and device for removing film fitted on container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus for removing a film fitted on a container, which quickly removes and recovers a cut film to be made structurally compact. SOLUTION: A film 4 which is expansible and shrinkable in itself and fitted on a container 1 in a tubular form is cut out from one end to the other end in its full length by a cutting means, the cut film 4 is held between a plurality of rollers 26, 27 and by rotation of the rollers 26, 27 the film 4 is removed from the container 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for removing a cylindrical film adhered to the surface of a container.

[0002]

2. Description of the Related Art Conventionally, for example, a plastic container such as a glass bottle or a PET bottle (a bottle made of polyethylene terephthalate) is used as a label printed with characters or a pattern indicating a trade name, or for protecting the container. As a general rule, a film is attached to the film, and as the film, a stretch film having self-stretchability is often used.

[Problems to be Solved by the Invention]

The above-mentioned container may be used once and then collected and reused. However, when the container is reused, the film is scratched or soiled during the distribution process or the use process. The film will be removed and a new film will be deposited.

Therefore, conventionally, as a means for removing the film, the film is removed from the container by cutting the film with a cutting device such as a cutter and peeling the film thus cut off from the container with a scraper or the like. Was.

However, if the film is simply peeled off from the container in this way, the cut film piece cannot be collected at a predetermined location, and the film piece interferes with the transfer of the subsequent container. become. Further, the work of peeling off from the container with a scraper or the like is a complicated work, and the provision of means for performing such work has a drawback that the device becomes large-scale.

Further, it is necessary to adjust the transfer speed of the container, the timing of cutting, and the timing of the stripping work, and it is difficult to increase the processing speed.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is possible to quickly remove and collect a cut film, and to provide a film fitted in a container that can be formed into a compact device. An object of the present invention is to provide a removing method and an apparatus therefor.

[0008]

[Means for Solving the Problems]

(Structure) The present invention has been made as a method and an apparatus for removing a film fitted in a container in order to solve the above problems. After cutting the film 4 having a property by the cutting means over the entire length from one end to the other end of the film 4,
The cut film 4 is sandwiched by a plurality of rollers 26, 27 and the film is removed from the container 1 by the rotation of the rollers 26, 27.
To remove 4.

A feature of the device for removing the film fitted in the container is that the tubular film fitted in the container 1 is covered.
Cutting means for cutting 4 along the entire length from one end to the other end by a cutting device, and a plurality of rollers 2 provided at a position capable of holding the film 4 cut by the cutting means.
The film removing means 25 is composed of 6,27 and removes the film 4 sandwiched by the rollers 26,27 from the container 1 by rotating the rollers 26,27.

(Operation) In the method of removing a film fitted in a container of the present invention, when the film 4 cut by the cutting means is removed from the container 1, the rollers 26, 27 are used.
The cut film 4 is sandwiched between the rollers 2
It is possible to surely perform the work of removing the film 4 cut by rotating the 6,27 with a simple configuration.

Further, by adjusting the rotation speeds of the rollers 26 and 27, the speed of the work for removing the film 4 can be easily adjusted arbitrarily.

Further, since the film is surely removed from the container 1 by the rotation of the rollers 26 and 27, the film 4 after being cut does not remain in the vicinity of the container 1 and disturbs the cutting of the film. It is possible to smoothly carry out a series of film recovery operations of peeling and recovery.

One end of the film 4 is separated from the container 1 by a separating means, and the separated one end of the film 4 and the container 1 are separated from each other.
When the film separated from the guide body is cut while inserting the guide body 14 between 1 and 1, and further moving the guide body and the container in the axial direction of the container, the film is already removed from the container. Since they are separated from each other, the film can be naturally peeled off from the container after cutting and the film can be peeled off from the container.

[0014]

An embodiment of the present invention will be described below with reference to the drawings. First Embodiment Example 1 shown in FIGS. 1 to 4 is a container made of synthetic resin, for example, a PET bottle, which is placed on the transfer device 3 in a state of being laid sideways so that its mouth portion 1a faces forward. That is, the transfer device 3 is provided with a plurality of container fixing jigs 2 as shown in FIG. 1, and the containers 1 are fitted into the container fixing jigs 2 and transferred in the direction of arrow A with a predetermined interval. It

On the surface of the cylindrical body of the container 1, a cylindrical film 4 as a label having a trademark name or the like printed thereon is adhered. The film 4 is a self-stretching polyethylene-based stretch film having a thickness of about 30 μm to 100 μm, and is attached to the container 1 in a tensioned state.

Reference numeral 6 is a cutting device for cutting the film 4. The cutting device 6 is a pair of left and right belt rotating bodies 47, 47 as separating means, an air nozzle 9, and a guide body 14 and a cutter as cutting means. It consists of 21 and.

The air nozzle 9 blows out air between the container 1 to be transferred and one end 4a of the film 4 (on the side of the mouth 1a of the container 1) to float one end 4a of the film 4 upward and separate it from the container 1. The nozzle port 10 is attached to a column fixed to the transfer device 3 so as to face obliquely downward.

Belt rotating bodies 47, 47 are shown in FIGS.
As shown in (a), a pair of pulleys 49a and 49b arranged in the transfer direction A of the container 1 and an endless rubber belt wound around the pulleys 49a and 49b and having a plurality of convex portions 50b formed on the surface thereof. It consists of 50 and. Belt rotating bodies 47, 47
Are gradually narrowed in the downstream direction (see FIG. 3A), and are provided so as to be inclined toward the substantially central direction of the container 1 as shown in FIG.

The rotary shaft 52 of the pulleys 49a on both upstream sides
Are linked together by a flexible joint 53, and the endless rubber belt 50 has a lower portion 50a that presses the film 4.
Circulate and rotate so as to move in the same direction as the transport direction A of the film 4. The rotation speed of the endless rubber belt 50 is preferably set to be substantially equal to the transfer speed of the film 4.

The guide body 14 has a substantially semicircular shape which covers the outer periphery of the container 1 and opens downward, and its protruding tip portion 14a.
Is between the pulleys 49b at the downstream end of the endless rubber belt 50, and a triangular cutter 21 is provided at the tip 14a. Therefore, the tip portion 14a is easily inserted between the film 4 lifted by the endless rubber belt 50 and the container 1, and the film 4 is reliably cut by the cutter 21.

When the film 4 is cut, the guide body 14 is inserted into the cut film 4. Therefore, even if the film 4 has a portion adhered to the surface of the container 1, the guide body 14 is inserted. Forced peeling along 14 surfaces.

Reference numeral 46 denotes a nozzle for ejecting cold water or hot water toward the space between the film 4 and the container 1, and a single nozzle or a plurality of nozzles are provided above the container 1. Therefore, the nozzle 46
Even if the contents such as juice and cola enter the space between the container 1 and the film 4 and are dried due to the water jetted onto the film 4 and the film 4 adheres to the container 1, The water spouted during can weaken its adhesion.

25 is cut by the cutter 21, and the container 1
A film removing device as a film removing means provided on one side of the transfer device 3 slightly downstream of the cutting device 6 for sandwiching the film 4 peeled from the container 1 and removing it from the container 1. The device 25 is composed of upper and lower rollers 26 and 27 which are provided so as to abut each other at a height approximately at the center of the axis of the container 1 and whose surface is covered with rubber. Further, the lower roller 27 is composed of a pair of rollers 27a and 27b arranged in parallel in the lateral direction of the transfer device 3 (see FIGS. 3 and 4).

Of the lower rollers 27, one roller 27a on the transfer device 3 side is connected to a motor 40 via a belt 41 as shown in FIG. It is rotationally driven in the B direction. Further, by the rotation of the one lower roller 27a, the upper roller 26 that is in contact with the one lower roller 27a and the other lower roller 27b that is in contact with the upper roller 26 and that is located outside are also rotated. To be done. Furthermore, both lower rollers 27a,
As shown in FIGS. 2 and 3, 27b is formed so as to project upstream of the upper roller 26 in the transfer direction, and a guide portion 28 is formed by the upper surfaces of the projected lower rollers 27a and 27b.

Reference numeral 56 is an air nozzle provided on the other side of the transfer device 3 facing the film removing device 25, and means for peeling the cut film 4 in the central part of the transfer device 3 from the container 1. Is provided so as to eject air toward the film 4.

Reference numeral 60 denotes a recovery bucket provided below the film removing device 25 on the downstream side, for accumulating the films 4 removed by the film removing device 25.

Next, the case of removing the film 4 adhered to the container 1 will be described. First, as shown in FIG. 1, the container 1 is fitted into the container fixing jig 2 so that its mouth portion 1a is on the front side, is transferred at a predetermined interval, and the juice ejected from the nozzle 46 causes the juice. To remove the dirt and the like to weaken the adhesive force between the film 4 and the container 1.

Further, as shown in FIG. 3A, the container 1 is transferred to the position of the cutting device 6 by the transfer means 3. In the cutting device 6, since the belt rotating bodies 47, 47 which rotate and circulate are gradually moved toward the center while pressing the film 1, as shown in FIG. The air is ejected to ensure that the film 4 is lifted by the belt rotating bodies 47, 47. From the jetting process of water by the nozzle 46, the belt rotating bodies 47, 47 and the air nozzle 9 are
The time until the step of lifting the film 4 by means of (4) is appropriately set so that the water 4 penetrates into the film 4 and the container 1 to weaken the adhesive force of the film 4.

Further, when the container 1 is moved forward by the fixing jig 2, the film 1 in a lifted state
The tip portion 14a of the guide body 14 is inserted between the container 1 and the container 1, and the film 4 is further cut by the cutter 21.

When the film 4 is cut, the guide body 14 is inserted into the cut film 4. Therefore, even if there is a portion of the film 4 attached to the surface of the container 1, the film 4 is cut. Is forcibly peeled off by the guide body 14, the cut film 4 is cut open in the lateral direction of the container 1, and the one end portion 4b of the film 4 is placed on the guide portion 28 of the film removing device 25. .

Further, at this time, as shown in FIG. 3B, since the air ejected from the air nozzle 56 provided at a position facing the film removing device 25 is simultaneously blown, one side end of the film 4 is formed. The part 4b is surely blown to one side of the transfer device 3 and, for example, the cut film 4 is cut.
Even if the film is stuck to the container 1 without being completely peeled off by the guide body 14, one end 4b of the film 4 is surely transferred to the film removing device 25 side. It is placed on the guide unit 28.

Further, the film 4 is moved in the transfer direction together with the container 1, and since the upper roller 26 is disposed on the upper surface of the pair of lower rollers 27a, 27b, the lower roller 27a,
By rotating the 27b and the upper roller 26, one side edge 4b of the film 4 is sandwiched between the upper and lower rollers 26, 27,
Transferred to the side of the transfer device 3 (see the chain double-dashed line in FIG. 4),
Completely removed from container 1.

Since the recovery bucket 60 is installed at the lower side portion of the film removing device 25, the film 4 removed from the container 1 by the film removing device 25 is recovered into the recovery bucket 60.

Second Embodiment Example FIGS. 5 and 7 show a second embodiment example of the present invention, in which 6 is a cutting device for cutting the film 4, which is an air nozzle 9 as a separating means, a guide member 14 and a cutting member. It comprises a cutter 21 as a means. The air nozzle 9 jets air between the container 1 and the one end 4a of the film 4 which are transferred in the same manner as in the first embodiment, and causes one end of the film 4 to float upward and separate from the container 1. As shown in FIG. 5, a support fixed to the transfer device 3 so that the nozzle opening is directed obliquely downward.
Attached to 12.

The guide body 14 is located below the air nozzle 9, and its base portion is a mounting portion projecting from the column 12.
It is provided on 16 through a pivot 17 so as to be rotatable in the vertical direction. Further, the guide body 14 faces in the direction opposite to the transfer direction A of the container 1, and the tip portion thereof is bent downward and the spherical portion is formed.
15 are integrally provided.

Reference numeral 20 denotes a spring provided between the mounting portion 16 and the base portion of the guide body 14, and the spring 20 causes the guide body 14 to move downward so that its spherical portion 15 contacts the surface of the container 1. Being energized.

As shown in FIG. 5, the upper surface of the tip portion 14a of the guide body 14 is inclined so as to be higher toward the base side, and the cutter 21 is provided behind the tip portion, and the cutter 21 is moved from the front to the rear. The blade portion 21a at the upper edge has an inclination angle substantially the same as that of the tip portion 14a of the guide body 14.

A film removing device 25 having the same structure as that of the first embodiment is provided at one side portion of the transfer device 3 slightly downstream of the cutting device 6, and the film removing device 25 side is provided. A vacuum device 57 for sucking the film 4 discharged from the film removing device 25 and collecting the film 4 in a collecting bucket 60 is provided at the lower part of the direction.

On the other side of the transfer device 3 facing the film removing device 25, as shown in FIG.
Film 4 with the same air nozzle 56 cut as the form example
Is provided to be peeled from the container 1.

Also when the film removing apparatus of the present embodiment having the above-mentioned configuration is used, the container 1 is fitted into the container fixing jig 2 so that the mouth portion 1a thereof faces the front, as in the above case, and the predetermined position is obtained. It is transferred to the cutting device 6 by the transfer device 3 with a gap.

Next, in the cutting device 6, when air is ejected from the air nozzle 9, the air enters between the container 1 and the one end 4a of the film 4, and as shown in FIG. Float above and separate them.

On the other hand, since the spherical portion 15 of the guide body 14 is formed so as to come into contact with the surface of the container 1 by the spring 20, the body portion extends from the mouth portion 1a of the container 1 along the shoulder portion of the container 1. By sliding on the surface, the tip portion 14a of the guide body 14 enters between the film 4 and the container 1 which are separated from each other.

Further, when the container 1 is transferred, the film 4
The distal end portion 14a of the guide body 14 separates the film 4 against the elastic contraction force of the guide body 4, and the cutter 21 moves relative to the container 1 so that the film 4 slides on the distal end portion 14a of the guide body 14, 14 guides the film 4 to the cutter 21. And since the cutter 21 moves integrally with the guide body 14,
As shown in FIG. 7B, the film 4 is cut by the cutter 21 from one end 4a to the other end over the entire length.

Since the spherical portion 15 slides on the surface of the container 1 at the tip portion 14a of the guide body 14, it is possible to surely insert the tip portion 14a into the film 4, and the spherical portion 15 is formed in the container. It does not damage the surface of 1.

Next, the one side edge 4b of the film 4 thus cut by the cutter 21 is blown by the air ejected from the air nozzle 56 located on the side of the transfer device downstream of the cutting device 6. , Is transferred to the film removing device 25 side provided at a position facing the air nozzle 56,
The one edge 4b of the film 4 is placed on the guide portion 28 of the film removing device 25, and is clamped between the upper and lower rollers 26, 27 and removed from the container 1 as in the first embodiment. Then, the film 4 transferred to the outside of the transfer device 3 by the rotation of the upper and lower rollers 26, 27 is sucked by the vacuum device 57 and recovered in the recovery bucket 60.

In the above example, the film removing device 25
Although the vacuum device 57 is provided in the above, provision of such a vacuum device 57 is not a condition.

[0047] Other Embodiments Incidentally, in the above examples, a film removing apparatus 25 on rollers 26 and a pair of lower rollers 27a, was formed from 27b, for example, by constituting the film removing apparatus 25 from the pair of upper and lower rollers Good. Also, set the lower rollers 27a and 27b to the upper rollers.
It is not a condition to provide the guide portion 28 projecting on the upstream side in the transport direction with respect to 26, but when such a guide portion 28 is provided, the film 4 is moved to the roller side by the rotation of the lower rollers 27a and 27b. Can pull up and down rollers 2
There is an advantage that it can be easily clamped between 6,27.

Further, in each of the above examples, the air nozzle 56 is provided as a means for peeling the cut film 4 from the container 1. However, a peeling means other than the air nozzle 56 may be provided, and the cutting is further performed. One end 4a of the rear film 4
Is peeled from the container 1 and is a guide part of the film removing device 25.
Such a peeling means may not be provided as long as it is securely placed on the 28.

Further, in each of the above examples, the guide body 14 is configured to abut on the container 1. However, the guide body 14 does not necessarily have to abut on the surface of the container 1, and the guide body 14 and the container 1 are separated from each other. It is also possible to make relative movement.

The container 1 and the cutting device 6 may be moved relative to each other by fixing the container 1 and moving the cutting device 6, or by moving the two devices relative to each other. It is also possible to remove the film 4 by standing and raising and lowering the guide body 14 and the air nozzle 9. In this case, the film removing device 25
Two or more rollers that contact the container 1 are provided upright on the side of the container 1, and the film is removed in the lateral direction of the container 1 by the rotation of the rollers.

Further, the shape of the guide body 14 is not limited to the above-mentioned examples, and may be, for example, a cylindrical guide body 14 having a tip protruding.

The shape of the container 1 is not limited to that of the above embodiment, and the film 4 ejected from the nozzle 9 is used.
Although air is used as an example of the fluid for separating the above, other gas may be used, or a liquid such as water can be ejected from the nozzle.

Further, it is not a condition to use the separating means such as the belt rotator 47 and the air nozzle 9 mentioned in each of the above examples. For example, as shown in FIGS. 8A and 8B,
A rotary roller 63 having a rubber ring 62 fitted on the outer periphery may be provided above the container 1 and rotatably driven at the axial center position of the container 1. The rotating roller 63 rotates in the direction opposite to the transport direction A of the container 1 as shown by the arrow, and when the rubber ring 62 presses the one end 4a of the film 4, one end thereof is lifted. Further, a pair of rotating rollers 63 may be provided on the left and right as shown in FIG.

Further, in the separating means shown in FIGS. 9 (a) and 9 (c), the upper ends of the pair of holding arms 65, 65 are pivotally connected by the pivot shaft 66 so that both holding arms 65, 65 are connected. Is opened and closed by a cylinder or an electric motor (not shown) so that one end of the film 1 is clamped and lifted.

Further, as the structure of the cutting device 6, in addition to the cutting device 6 in each of the above examples, for example, FIG.
As shown in (b) and (b), in the longitudinal direction of the guide body 14, a groove portion 35 that opens to the upper surface is formed, and a circular rotary blade 36 whose lower part is inserted into the groove portion 35 is rotatably supported on the stay 37. It may be one that has been.

Further, as a cutting means having another structure, a laser irradiation device 39 is provided above the guide body 14 as shown in FIG. 3C, and a laser 39a emitted from the laser irradiation device 39 is used. The film 4 may be cut, and when such cutting means is used, the film 4 can be cut without damaging the container 1 with a laser. In this case, the ejection of air from the air nozzle 9 and the laser irradiation from the laser irradiation device 39 can be controlled by the control device, and the air can be stopped during the laser irradiation.

[0057]

Industrial Applicability According to the present invention, a tubular film having self-stretchability fitted in a container is separated from the container, the film is cut from one end of the separated film, and the cut film is separated into a pair of films. Since it is sandwiched between rollers and removed from the container by rotation, it is possible to reliably remove the cut film pieces, and because the speed of film removal can be easily adjusted, the film is cut, removed and collected. It is possible to easily speed up a series of operations such as.

Further, one end of the tubular self-expanding film fitted in the container is separated from the container by the separating means, and a guide body is inserted between the separated one end of the film and the container. While the relative movement of the guide body and the container in the axial direction of the container, the film separated by the guide body is cut by the cutting means over the entire length from one end to the other end, so that the film is directly jetted by a high pressure jet as in the conventional case. Unlike the case of cutting, even if the container is a synthetic resin soft container such as a PET bottle, the film can be reliably and easily peeled and removed without damaging the container, and work efficiency can be improved. It will be possible.

[Brief description of drawings]

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

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

3A is a plan view showing a state where the container is transferred to a cutting device, and FIG. 3B is a plan view showing a state where the container is transferred to a film removing device.

FIG. 4 is a cross-sectional view showing a state where the guide body is inserted into the film (a two-dot chain line shows a state where the film is removed).

FIG. 5 is a front view of a main portion showing a second embodiment example of the present invention.

FIG. 6 is a plan view of FIG.

FIG. 7A is a sectional view showing a state where the guide body is inserted into the film, and FIG. 7B is a sectional view showing a state where the film is cut by a cutter.

8A and 8B show another embodiment of the spacing means, FIG. 8A is a sectional front view showing a main part, FIG. 8B is a side view of the same, and FIG. 8C is a side view of a main part.

9A and 9B show another embodiment of the separating means, FIG. 9A is a side view showing a main part, and FIG. 9B is a front view thereof.

FIG. 10 shows another embodiment of the cutting means, (a) is a front view showing a main part, (b) is a sectional side view of the same, and (c) is a front view showing a main part.

[Explanation of symbols]

1 ... Container, 4 ... Film, 9 ... Nozzle, 14 ... Guide body,
21 ... Cutter, 25 ... Film removing device, 26 ... Upper roller, 27a, 27b ... Lower roller, 47 ... Belt rotating body, 50 ... Belt, 56 ... Air nozzle, A ... Transfer direction

Claims (4)

[Claims] 1. A tubular film (4) having a self-stretching property fitted in a container (1) is cut by a cutting means over the entire length from one end to the other end of the film (4), and then cut. A container characterized in that the film (4) is sandwiched by a plurality of rollers (26) and (27), and the film (4) is removed from the container (1) by rotation of the rollers (26) and (27). A method of removing a film that has been fitted. 2. One end of the film (4) is separated from the container (1) by a separating means, and a guide body (14) is inserted between the separated one end of the film (4) and the container (1). The film (4) separated from the guide body (14) is cut while the guide body (14) and the container (1) are relatively moved in the axial direction of the container (1). A method for removing a film fitted in a container. 3. A cylindrical film fitted in the container (1)
(4) cutting means for cutting the entire length from one end to the other end by a cutting device, and a plurality of rollers (26), (27) provided at positions where the film (4) cut by the cutting means can be held. And a film removing means (25) for removing the film (4) sandwiched by the rollers (26) and (27) from the container (1) by rotating the rollers (26) and (27). A device for removing a film fitted in a container, which is characterized in that: 4. A separating means for separating one end of the film (4) from the container (1) and a film inserted between the one end of the film (4) separated by the separating means and the container (1), A guide body (14) provided so as to be relatively movable in the axial direction of the container (1) with respect to (4), and the cutting means cuts the film (4) while inserting the guide body (14). A device for removing a film fitted to the container according to claim 3, which is provided to do so.