JP2011184092A - Cap applicator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology for a cap applicator in which a thermoplastic resin cap is fixed positively and stably to an opening planned portion of a slant top surface of a paper container. <P>SOLUTION: A cap applicator 4 is provided with a cap feeding segment 7 for use in forming a paper container 1 having a cap 3 fixed thereon in the midway part where a paper container body 2 is transferred by a transferring conveyor 6. An accumulation conveyor 6a and a transferring conveyor 6c of the transferring conveyor 6 are inclined by an angle α so as to transfer the paper container 2 while the slant surface 2d of a top surface 2b having an easy cutting part G formed thereon being formed. The cap 3 is transferred to a feeding pocket 7d at a peripheral edge of a circular cap feeding table 7c at the cap feeding segment 7, the lower surface of the cap 3 held from the feeding pocket 7d with a cap fixing means 12 under a timing in which the paper container body 2 passes by a cap fixing position 11 is melted by a microflame and the like, moved down in a vertical direction and fitted to the easy cutting part G acting as an opening planned portion of the paper container body 2 and its top surface peripheral edge G1. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a cap applicator with an opening means attached to a paper container filled with a content liquid, and more particularly to a cap applicator capable of stably attaching a cap with an opening means to a planned opening portion of a paper container.

Conventionally, the contents described in Patent Document 1 are known as a related art relating to a paper container with a cap, which is provided with a cap on a paper container body filled with liquid food such as milk and soft drinks. As shown in FIG. 9, the cap-equipped paper container 50 includes a cap 51 on a roof-shaped top surface 50b, and the cap 51 includes a flange portion 51a and a pouring portion 51b that houses opening means (not shown) and a lid portion 51c. The manufacturing process of the cap-equipped paper container 50 includes forming a rectangular plate-like paper (not shown) into a rectangular tube shape, forming a bottom surface 50a, inserting the cap 51 into the opening 50c of the top surface 50b from the inside to the outside, and flange. After fixing the part 51a to the inner surface of the top surface 50b, the content liquid is injected from above, and the top surface 50b is sealed in a roof shape to form the capped paper container 50.

However, there is a case where the cap-equipped paper container 50 is formed by injecting the content liquid and sealingly forming the top surface 50b and then adhering the cap 51 with opening means to the top surface 50b from the outside. In this case, since the cap 51 is supplied obliquely downward to the inclined top surface 50b while conveying the roof paper container upright by the conveyor, the mounting position of the cap 51 is likely to be shifted, which is rare. The planned opening portion of the top surface 50b cannot be reliably opened by the opening means provided in the protruding portion 51a.

JP 2008-18971 A

The present invention has been made in view of such prior art, and is a cap applicator capable of stably and surely fixing a cap with an opening means made of a thermoplastic resin to a planned opening portion of an inclined top surface of a paper container. The purpose is to provide.

The present invention is a cap applicator for attaching a cap for pouring a content liquid into a paper container body of a paper container, wherein the paper container body is formed of a rectangular bottom surface, side surfaces, and a roof-shaped top surface, and the contents are formed on the top surface. An easily breakable part for liquid pouring is provided. The cap is composed of a pouring part and a lid part that are provided with an opening means, and after the content liquid is filled in the paper container body, the pouring part covers the easily breakable part and adheres to the easily breakable part and its surrounding top surface. Is done. At this time, the cap applicator includes a transport conveyor that transports the paper container body in an inclined manner so that a top surface including the easily breakable portion is horizontal, and a supply device that supplies the cap vertically.

In the cap applicator according to a preferred aspect of the present invention, the transport conveyor includes an automatic tilting device that keeps the top surface including the easily breakable portion horizontal.

In the cap applicator according to a preferred embodiment of the present invention, the paper container body is a rectangular sheet continuously cut from the band-shaped packaging material, and is folded into a cylindrical shape with a vertical line seal through a crease line provided in the band-shaped packaging material, and the four side surfaces and the horizontal bottom surface. After filling with the content liquid, it is hermetically sealed at the top surface of the exterior roof shape composed of a pair of triangular surfaces and a pair of trapezoidal surfaces, and one trapezoidal surface is provided with an easily breakable portion.

In the cap applicator according to a preferred embodiment of the present invention, the paper container body is formed by forming a belt-like packaging material into a cylindrical shape with a vertical line seal, filling the liquid content, and sealing and cutting with a pair of horizontal line seals to continuously form an original container. The prototype container is formed with a top surface including four side surfaces, a horizontal bottom surface, and a rectangular slope, and the rectangular slope includes an easily breakable portion.

According to the present invention, the cap applicator includes the transport conveyor that transports the paper container body in an inclined manner so that the top surface including the easily breakable portion is horizontal, and the supply device that supplies the cap vertically. When fixing to the easily breakable portion, it is possible to apply the cap to the easily breakable portion only by vertically descending the cap one-dimensionally. For this reason, since the cap can be stably and reliably affixed to the predetermined position, the quality of the paper container can be improved without impairing the sealing strength of the cap, and the easily breakable portion can be opened reliably. It is possible to reliably maintain the product value.

According to a preferred embodiment, since the conveyor is equipped with an automatic tilting device that keeps the top surface with the easily breakable portion horizontal, there is a slight error in the horizontal surface of the top surface with the easily breakable portion of the paper container body during manufacture. However, since the inclination of the conveyor can be automatically adjusted so that the top surface becomes horizontal by feedback, the above-described effects can be obtained reliably and stably.

According to a preferred embodiment, a rectangular sheet continuously cut from the band-shaped packaging material is bent into a cylindrical shape with a vertical line seal through a crease line provided in the band-shaped packaging material to form four side surfaces and a horizontal bottom surface, and filled with the content liquid After that, the above-mentioned effects can be reliably obtained for the paper container main body that is hermetically sealed with the top surface of the external roof shape composed of a pair of triangular surfaces and a pair of trapezoidal surfaces, and one trapezoidal surface has an easily breakable portion. .

According to a preferred embodiment, the main body of the paper container is formed by forming a belt-shaped wrapping material into a cylindrical shape with a vertical line seal, filling the content liquid, sealing and cutting with a pair of horizontal line seals, and continuously forming an original container. The above-mentioned effects can be reliably obtained with respect to the paper container main body formed by forming the top surface including the four side surfaces, the horizontal bottom surface, and the rectangular slope.

FIG. 3 is an external view of the cap applicator 4 in the first embodiment of the present invention, and is a perspective view showing a state where the cap 3 is attached to the easily breakable portion G of the paper container body 2 to form the paper container 1. It is a perspective view which shows the shape of the paper container main body 2 of the state with which the content liquid was filled in 1st embodiment of this invention. It is AA sectional drawing of FIG. 2 in 1st embodiment of this invention. It is sectional drawing which shows the state which attaches the cap 3 to the easily breakable part G of the paper container main body 2, and forms the paper container 1 in BB sectional drawing of FIG. 1 in 1st embodiment of this invention. It is a perspective view of the paper container 1 in the state which attached the cap 3 to the easily breakable part G of the paper container main body 2 of FIG. 1 in 1st embodiment of this invention. It is sectional drawing which shows the state of the cap 3 attached to the easily breakable part G in 1st embodiment of this invention. It is a perspective view which shows the shape of the paper container 26 formed by filling the content liquid in the paper container main body 27 in 2nd embodiment of this invention. In 2nd embodiment of this invention, (a) is a perspective view which shows the state which formed the original container 25 with the horizontal line seal 24, after making the strip | belt-shaped packaging material 22 cylindrical with the vertical line seal 23, (b) is It is a perspective view which shows the state which folds the prototype container 25 and forms the bottom face 21e and the top face 21g. It is a perspective view which shows the state which fixed the flange part 51a of the cap 51 from the container inner surface side to the top surface 50b of the paper container 50 with a cap in a prior art example.

<Embodiment of the present invention>
Below, 1st embodiment of this invention is described based on FIGS.

<Configuration of cap applicator>
As shown in FIGS. 1, 2, 3, 4, and 5, the paper container 1 is formed by providing a paper container body 2 with a cap 3, and the cap applicator 4 supplies a paper container body 2. And a cap supply unit 7 for attaching the cap 3 to the paper container main body 2 while the paper container main body 2 is conveyed by the conveying conveyor 6, and a discharge conveyor 8 for discharging the paper container 1 with the cap 3 attached thereto. .

First, the manufacturing process of the paper container body 2 will be described. In a filling machine (not shown), a belt-like wrapping material having a plurality of folds P for facilitating molding of the paper container main body 2 and an easy-to-break portion G for discharging the content liquid is a rectangular sheet for forming the paper container main body 2. The rectangular bottom surface 2a is formed by continuously cutting each rectangular sheet into a rectangular tube shape with a vertical seal H1 and horizontally sealing the lower end portion H2. Then, after filling the content liquid R from above, a top face 2b having a deformed gable roof shape formed by a pair of triangular surfaces 2c and a pair of trapezoidal surfaces 2d is formed by a folding seal (not shown) at the upper end, and a trapezoidal surface on the front side Easily breakable part G is provided in 2d.

The paper container body 2 includes an outer layer H1, a paper base H2, an adhesive layer H3, a barrier layer H4, and two inner layers H5 from the outside to the inside. A design or the like H6 is printed in advance on the outer surface of the paper substrate H2. The outer layer H1 and the inner layer H5 are formed of a low density polyethylene resin, the adhesive layer H3 is formed of a resin such as polyethylene or an ethylene copolymer, and the barrier layer H4 is formed of an aluminum foil or the like. The easily breakable portion G as the planned opening portion is the same as the other configuration except that the paper base material H2 is cut out in a circular shape in order to facilitate opening.

The transport conveyor 6 of the cap supply unit 7 includes an accumulation conveyor 6a that collects the paper container main bodies 2 without gaps, a pitch adjustment conveyor 6b that makes the paper container main bodies 2 equally spaced, and the paper container main bodies 2 and the paper containers 1 at equal intervals. It is comprised with the conveyance conveyor 6c conveyed. Here, the stacking conveyor 6a and the transport conveyor 6c are inclined at the same angle α and are arranged in a horizontal straight line, and the angle α is applied to the inclined surface 2d where the easily breakable portion G of the top surface 2b of the paper container body 2 is formed. It is an angle to make.

The pitch adjusting conveyor 6b is provided across the back side of the stacking conveyor 6a and the conveying conveyor 6c, and the paper container main body 2 can be sent to the conveying conveyor 6c at a predetermined equal pitch by controlling the pitch adjusting belt 6b.

An inclined conveyor unit 9 is provided to incline the upright paper container body 2 in the gap between the supply conveyor 5 and the stacking conveyor 6a, and an upright conveyor 10 is provided in the gap between the transport conveyor 6c and the discharge conveyor 8 to erect the inclined paper container 1.

In the cap supply unit 7, the cap 3 housed in the cap feeder 7a is aligned by rotating around the edge of the cap feeder 7a by the concave feeder 7b by the power not described in detail, and is aligned with the peripheral portion of the circular cap supply table 7c. Sequentially supplied to supply pockets 7d provided at equal intervals.

While the cap supply table 7c rotates intermittently on a horizontal plane, the cap is removed from the supply pocket 7d by a cap mounting means 12 (not shown in detail) that is raised and lowered in accordance with the timing when the paper container body 2 passes the cap mounting position 11 of the conveyor 6c. 3, with the lower surface of the cap 3 melted with a microframe or the like, the cap 3 is moved vertically downward to press and weld the easily breakable portion G of the paper container main body 2 and the top peripheral edge G1 thereof.

At this time, the cap 3 can pass through the gap S between the two adjacent supply pockets 7d in accordance with the timing at which the intermittently rotating supply table 7c is temporarily stopped, so that the cap mounting means 12 can be easily held with the cap 3 held. It can move downward and move upward without the cap 3.

The paper container 1 having the cap 3 fixed to the easily breakable portion G is transferred from the transport conveyor 6c to the discharge conveyor 8. Further, the cap 3 is continuously supplied to the empty supply pocket 7d as the cap supply table 7c rotates.

More specifically, the conveyor 6c includes a holding portion 6d that is connected at a right angle, holds the one side 2e and the bottom 2a of the paper container 1 and the paper container body 2 from below at an inclination angle α with respect to the horizontal, and at the same time, Since the pair of guide rails 6d are provided along the one side surface 2f, the paper container 1 and the paper container body 2 can be stably conveyed. In addition, since the holding part 6d of the conveyor 6c that holds the bottom surface 2a from below is continuously equally divided in the flow direction, the paper container 1 and the paper container body 2 can be continuously conveyed by rotating as indicated by an arrow W.

In this way, the cap 3 can be supplied to the easily breakable portion G by a one-dimensional operation in the downward direction as indicated by the arrow K in a state where the conveyor 6c is held at a predetermined inclination angle α, so that the cap 3 is stable. Thus, it can be securely fixed at a predetermined position of the easily breakable portion G in the horizontal state.

The accumulation conveyor 6a and the transfer conveyor 6c are provided with an inclination adjusting device (not shown) so that the inclined surface 2d of the top surface 2b on which the easily breakable portion G is formed is always horizontal. The tilt adjustment device monitors the tilted surface 2d with an image sensor or the like, and feeds back the data to appropriately adjust it with an electric or pneumatic actuator so as to hold the stacking conveyor 6a and the transfer conveyor 6c at a predetermined tilt angle α. The

As shown in FIG. 6, in the cap 3, a flange portion 3d is integrally formed on the outer periphery of the base portion 3c of the cylindrical extraction portion 3a, and the lid portion 3b is screwed into the extraction portion 3a. A pull tab 3f with a pull ring 3e serving as an opening means F accommodated in the extraction portion 3a is connected to the inner edge side of the base portion 3c by a thin portion 3g, and the thin portion 3g can be easily opened by pulling up the pull ring 3e. Since the cap 3 is resin-molded, the cap 3 is welded to the easily breakable portion G and the top peripheral edge G1 in a state where the surfaces of the flange portion 3d, the base portion 3c, and the bottom portion 3f are melted by a microframe or the like.

<Operation of paper container with cap>
Since the cap supply unit 7 can divert the existing apparatus, it can be covered with an inexpensive production cost. The conveyor 6 can be adjusted to a predetermined inclination angle α reliably and easily with a simple structure. Since the cap can be supplied by a one-dimensional operation only in the vertical direction, the cap is stably supplied vertically to the predetermined position of the easily breakable portion and can be securely fixed without shifting to the predetermined position of the easily breakable portion in the horizontal state. . For this reason, since an easily breakable part can open reliably and easily by pulling apart a pull ring and content liquids, such as a juice, can be poured out, commercial value can be raised.
<Second embodiment of the present invention>

The second embodiment of the present invention will be described with reference to FIGS. 7, 8A, and 8B. However, the same reference numerals are used for the same configurations as those in FIG.

As shown in FIGS. 7, 8 (a) and 8 (b), in a filling machine (not shown), the band-shaped packaging material 22 including the easily breakable portion G is formed into a cylindrical shape with a vertical seal 23 and filled with the content liquid. The original container 25 is continuously formed by sealing and cutting with the horizontal line seal 24. Next, both end portions of the pair of horizontal line seals 24 of the original container 25 are bent through a crease line Y provided in the belt-like packaging material 22, and four side surfaces 21a, 21b, 21c, 21d, a horizontal bottom surface 21e, a rectangular slope 21f, A paper container body 26 is formed by forming a top surface 21g having a horizontal horizontal line seal 24, and a paper container 27 is formed by attaching a cap to the easily breakable portion G arranged on the inclined surface 21f.

The shape of the cap-capped paper container itself has already been proposed by the applicant of the present invention. As described above, the slope 21f of the top surface 21g is applied to the paper container body 26 having a different manufacturing process as in the first embodiment. By transporting the paper container body 26 so as to be horizontal, the cap 3 can be reliably and stably fixed without shifting to the predetermined position of the easily breakable portion G in the horizontal state.

The embodiment of the present invention has been described with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes and the like within the scope of the present invention are included in the present invention. It is. For example, the configuration of the cap 3 can be applied to caps having various configurations such as a configuration including a screw for opening instead of a configuration including a pull tab for opening. The planned opening 53 may be easily cut by forming a perforation in the paper base without cutting the paper base. The present invention can also be applied to a packaging material in which the paper container body 1a is not provided with the barrier layer 11d.

DESCRIPTION OF SYMBOLS 1 Paper container 2 Paper container main body 2b Top surface 2d Inclined surface 3 Cap 4 Cap applicator 6 Conveyor 6a Stacking conveyor 6c Conveyor 7 Cap supply part 7c Cap supply table 7d Supply pocket 11 Cap attachment position 12 Cap attachment means α Angle G Easy Fracture part G1 Top surface periphery

Claims (4)

A cap applicator for attaching a cap for pouring the content liquid into the paper container body of the paper container,
The paper container body is formed of a rectangular bottom surface and side surfaces and a roof-shaped top surface, and includes an easily breakable portion for pouring the content liquid on the top surface,
The cap is composed of a pouring portion and a lid portion that are provided with an opening means, and after the paper container body is filled with the content liquid, the pouring portion covers the easy breakable portion and the easily breakable portion and its surroundings. Fixed to the top surface,
The cap applicator includes a transport conveyor that transports the paper container body in an inclined manner so that the top surface including the easily breakable portion is horizontal, and a supply device that supplies the cap vertically. Cap applicator to do. 2. The cap applicator according to claim 1, wherein the conveyor includes an automatic tilting device that keeps the top surface including the easily breakable portion horizontal. 3. 3. The cap applicator according to claim 1, wherein the paper container body has a cylindrical shape with a vertical line seal through a crease line provided with a rectangular sheet continuously cut from the band-shaped packaging material. Folded into four sides and a horizontal bottom surface, filled with the content liquid, sealed with the top surface of the exterior roof shape consisting of a pair of triangular surfaces and a pair of trapezoidal surfaces, and the easy breakage to one of the trapezoidal surfaces A cap applicator comprising a portion. 3. The cap applicator according to claim 1, wherein the paper container main body is formed by forming a belt-shaped wrapping material into a cylindrical shape with a vertical line seal, filling the liquid content, and sealing and cutting with a pair of horizontal line seals. A cap applicator characterized in that an original container is formed and a top surface having four side surfaces, a horizontal bottom surface and a rectangular slope is formed on the original container.