JPS6239430A - Method and device for continuously fitting cylindrical film to vessel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method and apparatus for automatically and continuously applying a cylindrical heat-shrinkable film to a container such as a bottle.

(Prior Art) Recently, a heat-shrinkable cylindrical film has been applied to the body of a bottle, etc. to enhance its design and trademark effect, and to prevent fragments from scattering when the bottle container is dropped. Various devices are available for automatically applying this cylindrical film to containers such as bottles, but the device disclosed in Japanese Patent Application Laid-Open No. 55-21300 is representative of the device that continuously performs this process. It is something like that.

In this known device, containers that have been fed in a linear array are sequentially fed into a number of container receiving pockets provided around the periphery of a turret via a star wheel, and these containers are rotated and moved. It has become. Above each of the container receiving pockets, a means is provided for sequentially taking out a flat sleeve-shaped film from the outside, opening it into a cylindrical shape, and applying it to the upper part of the container.

In this known device, a sleeve-like film opening/closing wave means of relatively complicated structure is provided for each of the many pockets provided on the periphery of the turret, making the entire device extremely complex and expensive.

(Problems to be Solved by the Invention) The present invention has been made in view of the conventional deficiencies as described in -F. It is an object of the present invention to provide a device having a structure Dfl which can be coated with a heat-shrinkable film and which is extremely cheap.

(Means for Solving the Problems) In order to achieve the above object, according to the method of continuously applying a cylindrical film to the container according to the invention of Box 1, a heat-shrinkable film with openings at the upper and lower ends is provided. While selectively conveying the flat sleeve of the film and the container to be packaged in a vertical positional relationship, the conveyance path of the sleeve and the conveyance path of the container are gradually brought closer to each other. The sleeve is gradually opened into a cylindrical shape in front of the conveyance path, and the container is inserted into the sleeve from the lower part of the sleeve which is opened in a cylindrical shape in front of the conveyance path.

In addition, the apparatus for continuously attaching a cylindrical film, which is the invention of Box 2 to achieve the above method, continuously applies flat sleeves of heat-shrinkable film with open upper and lower ends at predetermined intervals. It consists of a sleeve conveying means that conveys the containers continuously, and a container conveying means that is located below the sleeve conveying means and continuously conveys the containers in synchronization with the conveyance of the sleeve, and the sleeve conveying means and the container conveying means are are arranged in a positional relationship such that the lower part of the sleeve and the upper part of the container intersect with each other gradually approaching each other in the forward direction of the conveyance direction, and the sleeve conveyance means gradually moves the flat sleeve in the conveyance direction. It has means for opening to.

(Embodiments) Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

1 and 2 show a device according to a first embodiment of the invention, in which bottles 1 are fed in an upright arrangement and are maintained at predetermined intervals by a known screw feed 2. It is designed to be transported horizontally.

Above the supply end of the bottle 1, a flat sleeve formed by integrally sealing the side periphery of a continuous heat-shrinkable film 3 is intermittently supplied vertically downward to a predetermined thickness. A movable cutter 4-4 that reciprocates in a direction approaching each other is provided on both sides of the lower part of the cutter 4-4. .

Below this cutter 4-4, there is a pair of left and right vertical types that can be opened and closed, and are in an open state when the sleeve 5 cut by the cutter 4-4 falls, and are in an open state in other cases. A string-like belt conveyor 6-6 is provided so that the flat sleeve 5 falling from above can be held therebetween and conveyed horizontally forward in a vertical state.

A pair of left and right belt-shaped endless conveyor belts 7-7 are disposed in front of this string-shaped belt conveyor 6-6, and each belt surface of this belt-shaped conveyor belt 7-7 has a large number of small holes 8.
-8 is formed. This belt-shaped conveyor belt 7-7
The container is arranged in an inclined manner with the front end descending downward, and gradually approaches the conveyance path of the bottle 1 by the screw node 2 toward the front. The rear parts of both conveyor belts 7 to 7 in the direction of travel are closely spaced, while the front parts of the conveyor belts 7 to 7 in the direction of travel are gradually spaced apart by one angle. A negative pressure box 9 as shown enlarged in FIG. 2 is provided almost entirely on the inner side of each of the endless conveyor belts 7 at a distance from each other.

This negative pressure box 9 has an open inner surface so as to tightly cover the conveyor belt 7, and at 15th, its upper surface is communicated with an air source (not shown) via a pipe 10-10. attitude. The belt-shaped conveyor belt 7-7 is tilted forward at an angle such that the upper end 111S of the bottle 1, which has been conveyed in the horizontal direction, gradually enters the front part 8[() spaced apart from the phase η.

In the device d according to the first embodiment of the present invention having the above-mentioned configuration, the sleeve 5 is conveyed horizontally by the string belt conveyor 6-6, and then the sleeve 5 is conveyed between the belt-like conveyor belts 7-7 from its front end. handed over.

Since this boat-shaped conveyor belt 7-7 is tilted forward, the sleeves 5 being fed also gradually descend, but a negative pressure box 9 is installed in the front half of this belt 7-7. Because of this, both sides of the sleeve 5 are inserted into the small hole 8-8 of the belt by the 0 loaf from the 9-pressure box 9.
Through the meeting, Bell 1 is attracted to the surface. Then, as the conveyor belt 7-7 descends while gradually separating in front of the other side, the sleeve 5, whose both sides are attracted to both belt surfaces, gradually opens its upper and lower ends into a cylindrical shape. The upper end of the bottle 1 is inserted between the spaced apart conveyor belts 7-7 while running, but the conveyance of the bottle 1 and the conveyance of the sleeve 5 are arranged in advance in a periodic manner. , the upper end of the bottle is located below the sleeve 5, which opens in a cylindrical shape and descends.
As both move forward, the sleeve 5 gradually covers the bottle deeper from the top. When the front end of the conveyor belt 7-7 reaches the conveyor belt 1, the negative pressure of the negative pressure box 9 does not substantially act on the sleeve, and the front end of the conveyor belt 7-7 is in a state where the sleeve 5 is deeply covered with the bottle 1. The bottle is discharged beyond this point and sent to a heating step (not shown) in which the next stage sleeve 5 is heat-shrinked and brought into close contact with its outer periphery.

In the first embodiment of the present invention, the conveyor belt 7-7 for conveying the sleeve 5 made of heat-shrinkable resin was arranged to be inclined downward while conveying the bottle 1 horizontally, but this positional relationship is reversed. It may also be configured as shown in FIG.

In the embodiment shown in FIG. 3, conveyor belts 7a-7a
is arranged horizontally, whereas the conveying means for the bottle 1 has an inclined structure in which the front side in the direction of travel is gradually raised. Therefore, unlike the case of the first embodiment, the conveying means for the bottle 1 is such that the lower end roller 13 of one bottle holder 12 is rotatably fitted into the inclined groove plate 11, and this roller 13 is connected to the endless chain 14. They are connected to each other and are configured to be able to move upward along the groove plate 1 by driving this endless chain. Note that reference numeral 15 is a guide frame that protects the bottle 1 from falling over. The other configurations are substantially the same as in the first embodiment.

The travel of one bottle holder 12 is configured to be the same as the travel of the heat-shrinkable sleeve 5, so that from the lower frontage of the sleeve 5, which is gradually opened while the bottle 1 is being lifted and conveyed, The conveyor belt 7 is inserted into the inside and covered with it.
Sleeve 5 is attached to the body of bottle 1 when passing through the front end of a-7a.
It is sent to the next heat treatment process covered with

(Effects) As described above, according to the present invention, while a heat-shrinkable film sleeve and a container such as a bottle are continuously conveyed in a vertical positional relationship, the sleeve is sequentially placed over the container and the container is delivered by IJF. Therefore, the automated line for attaching the cylindrical sleeve to the container can be made into a narrow, straight line, making it possible to reduce the installation area of the device.

In addition, since the device of the present invention has a single unit for opening the sleeve, its structure is extremely simple, and costs can be significantly reduced compared to conventional devices that perform similar functions. I can do it.

[Brief explanation of the drawing]

1 and 2 show a device according to a first embodiment of the present invention, FIG. 1 is a perspective view showing the entire device, and FIG. 2 is an enlarged view showing a partially broken part of the pressure box. The perspective view and FIG. 3 are schematic side views showing a second embodiment of the present invention. 1... Bottle 2... Screw feed 3... Heat shrinkable film 4... Cutter 5...
Sleeve 7, 7a... Conveyor belt 8.
...Small hole 9...Negative pressure box maintenance applicant Applicant: Omori Machinery Co., Ltd.
Patent Attorney - Kensuke Shiro Figure 2↑

Claims (3)

[Claims] (1) While a flat sleeve of heat-shrinkable film with open upper and lower ends and a container to be packaged are continuously conveyed in a synchronized vertical positional relationship, the conveyance path of the sleeve and the conveyance path of the container are are gradually brought closer to each other, the flat sleeve is gradually opened into a cylindrical shape in front of the conveyance path, and the container is inserted into the sleeve from the lower part of the cylindrically opened sleeve in front of the conveyance path. A method for continuously applying a cylindrical film to a container characterized by inserting the film into the container. (2) A sleeve conveying means that continuously conveys flat sleeves of heat-shrinkable film with open upper and lower ends at predetermined intervals, and a container located below the sleeve conveying means and synchronized with the conveyance of the sleeves. and a container conveying means for continuously conveying the sleeve, and the sleeve conveying means and the container conveying means gradually approach each other in the forward direction in the conveying direction to a position where the lower part of the sleeve and the upper part of the container intersect. Apparatus for continuously applying a cylindrical film to a container, characterized in that the sleeve conveying means has means for gradually widening the opening of the flat sleeve in the conveying direction, the sleeve conveying means being arranged in relation to each other, . (3) The sleeve conveyance means is composed of a pair of belt conveyors having a large number of small holes, and the pair of belt conveyors are in close contact with each other at the rear in the conveyance direction, but are gradually separated from each other at the front in the conveyance direction. A method for continuously applying a cylindrical film to a container according to claim 2, characterized in that a vacuum suction means is provided inside each belt conveyor section.