CN113748071B - Automatic opening device for aseptic paper box package - Google Patents
Automatic opening device for aseptic paper box package Download PDFInfo
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- CN113748071B CN113748071B CN202080029964.2A CN202080029964A CN113748071B CN 113748071 B CN113748071 B CN 113748071B CN 202080029964 A CN202080029964 A CN 202080029964A CN 113748071 B CN113748071 B CN 113748071B
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- root
- cap
- external thread
- thread
- automatic opening
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- 238000005520 cutting process Methods 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 12
- 229910052782 aluminium Inorganic materials 0.000 description 12
- 239000011087 paperboard Substances 0.000 description 11
- 239000004411 aluminium Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 239000011111 cardboard Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 230000002650 habitual effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
- B65D41/04—Threaded or like caps or cap-like covers secured by rotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D43/00—Lids or covers for rigid or semi-rigid containers
- B65D43/14—Non-removable lids or covers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/42—Details of containers or of foldable or erectable container blanks
- B65D5/72—Contents-dispensing means
- B65D5/74—Spouts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
- B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
- B65D51/22—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing having means for piercing, cutting, or tearing the inner closure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cartons (AREA)
- Closures For Containers (AREA)
Abstract
The invention relates to an automatic opening device for aseptic carton packages, comprising a box mouth provided with an external thread having at least one starting point, said external thread comprising a first root and an oppositely oriented second root, and a box cover having at least one section of internal thread, the internal thread being engaged with the external thread of the box mouth. The automatic opening device for aseptic carton packages is provided with means ensuring that each internal thread of the lid can only be screwed onto the first root of the mouth of the carton or onto an additional root parallel to the first root of the thread of the mouth of the carton after the first unscrewing from the mouth of the carton.
Description
Technical Field
The invention relates to an automatic opening device for aseptic carton packages, comprising a mouth provided with an external thread (11) having at least one starting point, said external thread comprising a first thread base and an oppositely oriented second thread base, and a lid having at least one section of internal thread screwed into the external thread of the mouth. The automatic opening device for aseptic carton packages is provided with means ensuring that each internal thread of the lid is screwed onto only the first root of the mouth after the first unscrewing from the mouth, or onto an additional root parallel to the first root of the mouth thread.
Background
It is well known to use disposable packages for packaging different types of liquids, especially in the dairy and juice industries, etc. Known types for this purpose include substantially parallelepiped-shaped packages made of a thin, fibrous laminate (typically paper), on which at least a second thin, high-strength laminate, typically aluminum, is secured.
An impermeable thermoplastic layer, typically polyethylene, is also typically added, which may be applied to the composite laminate and form an intermediate layer between the paperboard and aluminum layers of the laminate. The manufacturing cost of such materials is very low and can be easily made into various shapes. This greatly facilitates the process of manufacturing packages from such materials. This type of package is known as a carton package.
For hygienic and food safety reasons, and to avoid microbial contamination of the product, the carton packages made from the above-mentioned laminates must be kept in aseptic conditions. Thus, the package must be sealed during the industrial process and must remain in this state until the contents thereof need to be poured. This type of package is known as a "sterile carton package".
Carton packages are typically provided with a threaded mouth and a lid to facilitate removal of the product from the interior of the package. It is necessary to provide means so that the package can be cut in the area where the spout and lid assembly is produced to allow the product contained in the package to flow through the spout.
The use of a spout and cap kit in a sterile carton package allows the package to be closed again with only a portion of the contents poured. For this purpose, it is sufficient to screw the lid onto the mouthpiece again, the remaining content remaining sealed in the package.
Various types of mouthpiece and cap arrangements for aseptic carton packages are known. Such mouthpiece and cap arrangements of the known type involve the use of a third component, namely a rotary cutting assembly, mounted within the mouthpiece and which is driven by the cap when it is first unscrewed from the mouthpiece. Thus, the rotary cutting assembly cuts the aluminum layer of the package, opening a channel so that the contents of the package can be poured through the spout. Such a device comprising a mouthpiece, a cap and a cutting assembly is called an "automatic opening device".
In order for such automatic aseptic carton package opening devices to function properly, it is necessary to open holes in the paperboard layer during the manufacturing steps of the raw material for the subsequent manufacture of the aseptic carton package. This is done prior to the lamination process of the layers laminated on the paperboard layer. The aperture must be located exactly in the area where the automatic opening device will be applied in order to open the package.
In the present description, the expression "opening the package" is understood as the operation of cutting the aluminium layer of the package below the cardboard layer hole. The bottom or flange (flange) of the mouth of the automatic opening device is applied to the package such that the centre line of the mouth is aligned with the centre of the aperture.
Various types of automatic opening devices for aseptic carton packages are known. Some versions of these devices are described in patent documents US7036683, WO2004/000667, WO2006/050624, WO2007/113216 and WO2007/115978, the contents of which are incorporated by reference into the present application.
In the automatic opening device of all the aseptic carton packages mentioned in the above paragraph, the lid is provided with drive means for moving the rotary cutting assembly. They have the disadvantage that the lid, when unscrewed from the mouthpiece, can move away from the rotary cutting assembly, thereby presenting difficulties in the actuation of the rotary cutting assembly.
The solution to this problem is to lengthen the drive assembly of the lid towards the inside of the mouthpiece to compensate for the mentioned removal movement between the lid and the rotary cutting assembly. This elongation of the drive assembly results in a significant increase in the weight of the cap due to the increased use of materials. Depending on the design of the bottle cap, this also results in an increase in the height dimension of the automatic opening device, which in turn results in an increase in extension due to the larger dimensions of the device, which makes stacking of the packages difficult.
In WO 2016/08008, which is owned by the applicant of the present application, the content of which is incorporated by reference in this specification, an automatic opening device for aseptic carton packages is described which employs threads having oppositely directed roots. With this type of screw thread, the automatic opening device disclosed in document WO 2016/08008 comprises only two parts, a mouthpiece and a cap, inside which the rotary cutting assembly is fixed.
The automatic opening device for aseptic carton packages disclosed in WO 2016/08008 comprises the use of a spout provided with an external thread in its outer region comprising a first root and an oppositely oriented second root, and a cap provided with a plurality of segments of internal thread engaging the external thread of the spout.
The operation of an automatic opening device for opening sterile cartons of packages is described in detail in document WO 2016/08008. By reading the description of this document, the simplicity and efficiency of the device for opening the package is noted, since threads with opposite-directed roots are used.
As with other devices for automatically opening sterile carton packages, the device disclosed in WO 2016/08008 enables the package to be closed again after opening. For this purpose, the user simply screws the lid back onto the mouthpiece.
The patent document BR 10 2019 003243 0, which is common to the applicant of the present application, the content of which is incorporated in its entirety into the present description by reference, describes an automatic opening device for aseptic carton packages similar to that described in document WO 2016/08008, characterized by a removable cutting device.
The automatic opening devices for aseptic carton packages disclosed in WO 2016/08008 and BR 10 2019 003243 0 are each provided with a threaded box mouth having opposite-directed bases, a first base being in the right-hand direction and then a second base being in the left-hand direction. Thus, when the internal thread section of the closure enters the second root, the closure will move upwardly due to the second root of the box mouth thread to the left.
This may give consumers some strangeness, who are accustomed to using only a right-handed mouthpiece, wherein the lid will only move down when screwed onto the mouthpiece to close the package. Thus, it may occur that the consumer does not fully engage the cap onto the thread, which has a root in the opposite direction to the spout. This means that the package is not completely closed in these circumstances. If the product in the package is placed in a side-supported position, this may lead to leakage of the product in the package, which often occurs when stored in a refrigerator.
Disclosure of Invention
The invention discloses an automatic opening device for aseptic carton packages, which is provided with means to avoid this situation and to ensure that each internal thread segment of the lid can only be re-engaged in the other root after the first unscrewing from the mouth, parallel to the first root of the thread, with right-hand direction. This prevents the user from inadvertently opening the package portion because they are not accustomed to using a mouthpiece with threads in the opposite direction of the root. At the end of this tightening operation, the package will be fully closed.
These and other features of the present invention will become apparent from the following detailed description of the invention.
Brief description of the drawings
The invention will be better understood from the following detailed description, taken in conjunction with the accompanying drawings, in which:
figures 1A and 1B show a cross-sectional front view and a perspective view, respectively, of a first embodiment of an automatic opening device for aseptic carton packages of the present invention, depicting the mouth and lid of the box prior to assembly to form the device;
Figures 2 to 5 illustrate the operation of first unscrewing the lid from the mouth of the automatic opening device for aseptic carton packages illustrated in figures 1A, 1B;
Figures 6 and 7 depict the operative steps of screwing the lid back again to the mouth of the automatic opening device of the aseptic carton package shown in figures 1A and 1B;
Figures 8A and 8B show a front view and a cross-sectional perspective view, respectively, of a second embodiment of an automatic opening device for aseptic carton packages of the present invention, wherein the spout and lid are depicted prior to assembly to form the device;
figures 9 to 12 depict the operational steps of first unscrewing the lid from the mouth of the automatic opening device for aseptic carton packages depicted in figures 8A and 8B; and
Figures 13 and 14 depict the operative steps of rotating the lid back to the mouth of the automatic opening device of the aseptic carton package shown in figures 8A and 8B.
Detailed Description
The present invention provides an automatic opening device for aseptic carton packages incorporating threads having oppositely directed roots as disclosed in WO 2016/08008. In the description of the invention that will be made hereinafter, for descriptive purposes only, an automatic opening device for aseptic carton packages will be considered, which incorporates the features disclosed in document BR 10 2019 003243 0. It should be mentioned that the invention may be used with other types of automatic opening devices for aseptic carton packages and is therefore not limited to the devices disclosed in document BR 10 2019 003243 0.
From now on, the terms "automatic opening device for aseptic carton packages" and "automatic opening device" will be used interchangeably in this specification. Similarly, the use of the singular or plural form of "package" or "carton package" is always to be understood as the singular or plural, respectively, of "sterile carton package".
Also, the use of the expression "open package" or "open the package" in this description should be understood as a package in which the aluminium layer has been cut by the automatic opening device of the aseptic carton package. The expression "aluminium layer" is understood to mean the portion of aluminium foil that is exposed in the package as a result of the fact that a hole is made in the cardboard layer used to make the package, said hole being made before another cardboard layer used to make the package is laminated. An automatic opening device for aseptic carton packages must be applied to the paperboard layer by gluing or a similar process, and the axis of symmetry of the carton mouth substantially coincides with the axis of symmetry of the aperture formed in the paperboard layer.
In the description that follows, like parts will be referred to throughout and are designated by the same reference numerals in the figures. Terms such as "top," "bottom," "vertical," and "horizontal" as used in this specification refer to an object, component, part, section, area, or the like in the location depicted in the drawings. Note that the figures are not drawn to the same scale, as some of them must be enlarged to facilitate viewing. The terms "front" and "rear" and the like, if used with reference to an object, component, assembly, etc. depicted in the figures, should be understood in the order of viewing from left to right of the figures, or from top to bottom of the figures, the term "front" is associated with more left and/or more upper, the term "rear" is associated with more right and/or lower, and combinations of such orientations are possible.
Fig. 1A and 1B show a front view and a perspective view, respectively, of a first embodiment of an automatic aseptic carton package opening device 1 of the present invention, comprising a spout 10, a lid 20 and a rotary cutting assembly 30, wherein the spout 10 lid 20 is depicted in fig. 1A and 1B prior to assembly to form the device.
It can be seen that the automatic opening device 1 comprises a box mouth 10 with an external thread 11, the external thread 11 comprising a first root 11b connected to a second root 11a of opposite direction. The external thread 11 must have at least one start point, although it is represented by three start points in fig. 1A and 1B, which provides more stability to the cap.
The lower region of the spout 10 is connected to the bottom assembly 12 or flange, the lower region of which is designed to be connected to the paperboard layer of the aseptic carton package by means of an adhesive or similar process, the symmetry axis of the spout substantially coinciding with the symmetry axis of said aperture made in the paperboard layer. As described above, the aluminum layer to be torn by the automatic opening device 1 is located just below the paperboard layer.
The automatic opening device 1 further comprises a cap 20 provided with an internal thread segment 21, said internal thread segment 21 being designed to be screwed onto the external thread 11 of the mouthpiece 10. The cap 20 must be provided with at least one internally threaded section 21. In the figure, three internal thread segments 21 are shown, as an external thread 11 with three starting points on the mouthpiece 10 is used.
As previously mentioned, the present description considers, for descriptive purposes only, an automatic opening device for aseptic carton packages, which incorporates the features disclosed in document BR 10 2019 0032430, and therefore, lid 20 also incorporates drive assembly 26, the function of which is described in said document BR 10 2019 0032430, which is not described here, since it is not part of the inventive concept of the present invention. Accordingly, and reiterating what has been mentioned above, the construction of the lid 20 is not limited to the representation in fig. 1A and 1B.
The cutting assembly 30 shown in fig. 1A and 1B, fixed to the inner upper region of the spout 10, is just one of several known options for the configuration of this component, chosen for descriptive purposes only, which refers to one of the embodiments of the automatic opening device for aseptic carton packages disclosed in said document BR 10 2019 003243 0, and will not be described in this specification, since it is not part of the inventive concept of the present invention. Accordingly, and reiterating what has been mentioned above, the construction of the cutting assembly 30 is not limited to the representation in FIGS. 1A and 1B.
According to various embodiments of the invention of the document BR 10 2019003243 0, the cutting assembly 30 may be attached to the drive assembly 26 of the cartridge mouth 10 or the cartridge cover 20 by a plurality of rupturing assemblies. Depending on which component the cutting assembly 30 is secured to, whether the mouthpiece 10 or the drive assembly 26 of the cap 20, the cutting assembly 30 will be separated from either of these two components, whether during assembly of the packaged automatic opening device 1, during operation within the factory, or during operation when the cap 20 is first unscrewed from the mouthpiece 10.
This feature does not interfere with the operation of the packaged automatic opening device 1 of the present invention, regardless of the configuration employed to secure the cutting assembly 30 to the other component of the packaged automatic opening device 1, whether to the mouthpiece 10 or to the drive assembly 26 of the lid 20.
Fig. 2 to 5 depict steps in the operation of unscrewing the lid 20 for the first time from the spout 10 of the automatic opening device 1 for aseptic carton packages depicted in fig. 1A and 1B. For ease of understanding, only the internally threaded section 21 of the cap 20 is depicted in fig. 2-5. Since the internally threaded segments 21 are integral with the cap 20, of course, any movement they do will necessarily be in accordance with the movement of the cap 20.
In fig. 2, the automatic opening device 1 of a sterile carton package is shown in a situation where its components have been assembled correctly, which is an operation performed at the factory. In fig. 2 it can be seen how the internal thread segments 21 of the lid 20 are located in the rear region of the second root 11a of the external thread 11 of the mouth 10, which is the position after they have been factory assembled the lid 20 and the mouth 10 to form the automatic opening device 1 for aseptic carton packages. Of course, only a portion of the internally threaded section 21 of the lid 20 is shown in fig. 2, since the remainder is the lid 20 covered by the mouthpiece 10.
In fig. 3, the automatic opening device 1 of a sterile carton package is shown in a situation in which the lid 20 has been unscrewed for the first time from the mouthpiece 10 by applying a counter-clockwise rotation to the lid 20. Thus, the internal thread segment 21 of the box cover 20 traverses almost the entire length of the second root 11a of the external thread 11 of the box mouth 10. Since the second root 11a is left-handed, the cap 20 is moved axially downward during the movement of the internal thread segment 21 onto the second root 11a of the external thread 11 of the box mouth 10.
The combination of rotation and axial downward movement performed by the cap 20 causes activation of the cutting assembly 30 such that the latter also performs a combination of counter-clockwise rotation and downward axial movement. Thus, in this combination of movements, the cutting assembly 30 cuts the wrapped aluminium layer, as known in the art, for example as described in detail in documents WO 2016/08008 and BR 10 2019 003243 0. As can be seen in fig. 3, the cutting assembly 30 has been at the end of its axially downward movement.
In fig. 3, a limiter 11c can be seen on the second root 11a of the external thread 11, immediately adjacent to the junction of the second root 11a with the first root 11b of the external thread 11. The limiter 11c is designed to allow the internally threaded section 21 of the cap 20 to pass over the limiter 11c only when the limiter 11c is unscrewed from the mouthpiece 10. In other words, each internal thread segment 21 of the cap 20 can only pass its respective limiter 11c if: this occurs only once when cap 20 is first unscrewed from mouthpiece 10 when it has previously passed the second root 11a of external thread 11.
In this embodiment, by way of example only and not limitation, the limiter comprises an upper threaded extension of the first root 11b, the face of which facing the second root 11a of the external thread 11 is wedge-shaped, rising from the last region of the second root 11a until it encounters the top of the threaded extension, which must have a smaller height to allow the internal thread segments 21 to pass over them when the cap 20 is first unscrewed from the mouth 10, without making unscrewing of the cap 20 difficult.
The other face of the limiter 11c, formed by extending the upper thread of the first root 11b, faces the first root 11b, which face has a flat surface like a wall, which prevents the internal thread segments 21 from going beyond the limiter 11c when the cap 20 is screwed back onto the spigot 10. Other configurations may be used for the limiter 11c as long as they operate in the manner described above.
With continued unscrewing movement of the cap 20 from the mouthpiece 10, the internally threaded section 21 of the cap 20 will move past the limiter 11c and then through the first root 11b of the external thread 11, as shown in fig. 4. Of course, each first root 11b of the external thread 11 is provided with a limiter 11c.
Since the first root 11b is right-handed, the cap 20 is then moved axially upward, in conjunction with the counter-clockwise rotational unscrewing movement, until the internal thread segment 21 of the cap 20 has moved completely past the first root 11b of the external thread 11, as shown in fig. 5. At the end of unscrewing the lid 20, the package will be opened and its contents can be poured through the mouthpiece 10.
Thus, in this first embodiment of the present invention, as previously described, when cap 20 is unscrewed from mouthpiece 10 for the first time, the passage of internal thread segments 21 of cap 20 through second root 11a of external thread 11 of mouthpiece 10 occurs only once.
To re-screw cap 20 onto mouthpiece 10 it must be engaged with the mouthpiece and then a clockwise rotational movement applied so that the internally threaded section 21 of cap 20 can begin to screw onto the first root 11b as shown in figure 5. The internal thread segments 21 then pass through the first root 11b of the external thread 11 to the junction with the second root 11a, as shown in fig. 7. The screwing movement of the cap 20 on the mouth 10 will be completed, since the restriction 11c will not allow the internal thread segments 21 to engage into the second root 11 a.
As can be seen from the above description of the first embodiment of the invention, the second root 11a of the external thread 11 is used only to drive the cutting assembly 30 so that it can cut the aluminium layer of the package, allowing the package to be opened, according to the teachings of the present invention. Thereafter, the second root 11a is no longer functional. Thus, when screwing the cap 20 back onto the mouthpiece 10, this tightening will only occur on the first root 11b of the right-oriented external thread 11, and therefore the consumer will not notice any difference from their habitual operation of screwing the cap onto a conventional mouthpiece.
The fact that the tightening of the cap takes place only on the first root 11b of the external thread 11 allows the lower part of the cap 20 to rest on the upper edge of the mouthpiece 10, as shown in fig. 7, which ensures that the package is completely sealed after screwing the cap 20 back onto the mouthpiece 10.
Fig. 8A, 8B are front and perspective views, respectively, of a second embodiment of an automatic opening device 51 for aseptic carton packages of the present invention, which basically comprises the same components as the aforementioned automatic opening device 1 for aseptic cartons, only one difference between the components of which is observed, as will be seen hereinafter.
Similar to the aseptic carton package automatic opening device 1 described previously, the automatic opening device 51 of the aseptic carton package of the second embodiment of the present invention includes a spout 10, a lid 20, and a cutting assembly 30, wherein the spout 10 and the lid 20 are depicted in fig. 8A and 8B prior to assembly to form the device.
The same comments made in the description of the first embodiment of the present invention regarding the various possibilities of securing the cutting assembly 30 to the drive assembly 26 of the spout 10 or lid 20 also apply to this second embodiment of the present invention, which does not cause problems for the operation of the automatic opening device 51 of the aseptic carton package of this embodiment of the present invention.
As can be seen in fig. 8A and 8B, the automatic opening device 51 includes a box mouth 10 having an external thread 11, the external thread 11 including a first root 11B connected to a second root 11a in an opposite direction. The external thread 11 must have at least one start point, although it is represented by three start points in fig. 8A and 8B, to provide greater stability to the screw cap.
The lower region of the spout 10 is connected to the base assembly 12 or flange, the lower region of which is designed to be connected to the paperboard layer of the aseptic carton package by adhesive or similar process, the symmetry axis of the spout being substantially coincident with the symmetry axis of the aperture made in the paperboard layer. As previously described, the aluminum layer to be torn by the automatic opening device 51 is located just below the paperboard layer.
The automatic opening device 51 further comprises a lid 20 provided with an internal thread segment 21 designed to be screwed onto the external thread 11 of the mouthpiece 10. The cap 20 must be provided with at least one internally threaded section 21. In the figure three internal thread segments 21 are shown, since an external thread 11 with three starting points is used in the mouthpiece 10.
As mentioned above, for illustrative purposes only, the present description contemplates an automatic opening device for aseptic carton packages that incorporates the features disclosed in document BR 10 2019003243 0, and therefore the lid 20 also incorporates the drive assembly 26, the function of which is described in said document BR 10 2019003243 0, as it is not a part of the inventive concept of the present invention. Accordingly, and reiterating what has been mentioned hereinafter, the construction of the lid 20 is not limited to the representation in fig. 8A and 8B.
The cutting assembly 30 shown in fig. 8A and 8B secured to the inner upper region of the spout 10 is only one of several options for this assembly configuration, which is chosen for descriptive purposes only and which refers to one of the embodiments of the automatic opening device for aseptic carton packages disclosed in said document BR 10 2019 003243 0, which will not be described here, since it is not part of the inventive concept of the present invention. Accordingly, and reiterating what has been mentioned above, the construction of the cutting assembly 30 is not limited to its representation in fig. 8A and 8B.
Fig. 9 to 11 depict the operation steps of first unscrewing the lid 20 from the mouth 10 of the automatic opening device 51 for aseptic carton packages depicted in fig. 8A and 8B. For ease of understanding, only a portion of the internally threaded section 21 of the cap 20 is shown in fig. 9-11. Since the internally threaded segments 21 are integral with the cap 20, of course, any movement they do will necessarily be the same as that of the cap 20.
In fig. 9, the automatic opening device 51 of a sterile carton package is shown in a situation where its components have been assembled correctly, an operation performed in the factory. In fig. 9 it can be seen how the internally threaded section 21 of the lid 20 is located in the rear region of the second root 11a of the external thread 11 of the mouth 10, which is the position they are after factory assembly of the lid 20 and mouth 10 to form the automatic opening device 51 for a sterile carton package. Of course, only a portion of the internally threaded section 21 of the lid 20 is shown in fig. 9, as the other portion is the lid 20 covered by the mouthpiece 10.
In fig. 10, the automatic opening device 1 of a sterilized carton package is shown as a case in which the lid 20 has been unscrewed from the mouth 10 for the first time by applying a counterclockwise rotation to the lid 20. Thus, the internal thread segment 21 of the box cap 20 has moved through the entire length of the second root 11a of the external thread 11 outside the box mouth 10 and is located at the junction between the second root 11a and the first root 11b of the external thread 11. Since the second root 11a is left-handed, the cap 20 follows the path of the internal thread segment 21 on the second root 11a of the external thread 11 of the box mouth 10 in an axially downward motion.
The combination of rotation and downward axial movement by the cap 20 causes activation of the cutting assembly 30 such that the latter also performs a combination of counter-clockwise rotation and downward axial movement. Thus, during this combination of movements, the cutting assembly 30 cuts the wrapped aluminium layer, as known in the art, for example as described in detail in documents WO 2016/08008 and BR 10 2019 003243 0. In fig. 10, the cutting assembly 30 has been at the end of its axially downward movement.
With continued unscrewing of cap 20 from mouthpiece 10, internal thread segment 21 then moves past the first root 11b of external thread 11. At the end of unscrewing of the cap 20 from the mouthpiece 10, as shown in fig. 11, the internal thread segment 21 has moved completely past the first root 11b of the external thread 11, so that the package will be opened and its contents can be poured through the mouthpiece 10.
According to the teachings of the present invention, with reference to its second embodiment, the threading of the internally threaded section 21 of the cap 20 through the first and second roots 11b and 11a of the external thread 11 of the mouthpiece 10 occurs only once, as previously described, when the cap 20 is first unscrewed from the mouthpiece 10. In this embodiment, the first root 11b of the external thread 11 is provided with a narrow channel 11b' formed to allow the internal thread segment 21 of the cap 20 to be withdrawn when the cap 20 is first unscrewed from the mouth 10. As will be seen below, the narrow passage 11b' prevents the internally threaded section 21 of the cap 20 from re-entering the first root 11b of the external thread 11. Therefore, the cap 20 cannot be screwed back onto the external screw 11.
To re-screw cap 20 onto mouthpiece 10, external thread 11 of mouthpiece 10 is provided with an additional root 13 parallel to the first root, as shown in figures 12, 13 and 14. The additional root 13 is formed by an additional flank 13a of the lower thread parallel to the first root 11b, the space between these two threads forming said additional root 13.
To screw the cap 20 back onto the mouthpiece 10 it must be engaged with the mouthpiece and then rotated clockwise so that the internally threaded section 21 of the cap 20 can begin to engage onto the mouthpiece 10. Since the internal thread segments 21 of the box cover 20 cannot enter the first root 11b of the external thread 11, they can only be screwed onto the additional roots 13. Figures 12, 13 and 14 depict the entire sequence of engagement of thread segments 21 into additional root 13 as shown in figure 12, and their path through additional root 13 as shown in figure 14.
It can be seen that in this second embodiment of the invention, the external thread 11 is used only to drive the cutting assembly 30 so that it can cut the aluminium layer of the package, providing its opening. After that, the external thread 11 has no function. Thus, when the cap 20 is screwed again onto the mouthpiece 10, this screwing will only occur on the right-oriented additional root 13, and therefore the consumer will not notice any difference from the customary operation when screwing the cap onto a conventional mouthpiece.
Another advantage of the cap screwing occurring only on the additional root 13 is that it allows the lower part of the cap 20 to rest on the upper edge of the mouthpiece 10, as shown in figure 14, which ensures a complete seal of the package after screwing the cap 20 back onto the mouthpiece 10.
As can be seen from the foregoing description, the automatic opening devices 1 and 51 for automatically opening aseptic carton packages of the present invention, in addition to the advantages produced by the inventive concepts employed, have the additional advantage that the devices can be manufactured in producible injection molds without technical difficulties, which greatly reduces the manufacturing costs.
The present invention has been described in terms of various embodiments thereof. However, modifications or substitutions may be introduced without changing the inventive concepts described and disclosed in the present specification. Thus, the invention is not limited to the described embodiments, but only to the content of the claims following the description.
Claims (3)
1. An automatic opening device for aseptic carton packages, comprising:
a box mouth (10) having a variable direction external thread (11), said external thread (11) having at least one start point, said external thread (11) comprising a right hand first root (11 b) connected to a left hand second root (11 a), a lower region of the box mouth (10) being connected to a bottom assembly (12);
A cap (20) having a drive assembly (26) and an internal thread section (21), the internal thread section (21) being intended to be screwed onto an external thread (11) of the mouthpiece (10); and
-A cutting assembly (30), the cutting assembly (30) being connected to one of the drive assemblies (26) of the mouthpiece (10) and the cap (20);
Characterized by further comprising a limiter (11 c) at the junction of the second root (11 a) of the external thread (11) with the first root (11 b) of the external thread (11), said limiter (11 c) being configured to allow the internal thread section (21) of the cap (20) to pass over the limiter (11 c) when the cap (20) is unscrewed for the first time and to prevent the internal thread section (21) of the cap (20) from entering said second root (11 a) when the cap (20) is unscrewed back into the threaded mouth (10).
2. An automatic opening device of a sterile carton package according to claim 1, characterized in that the limiter (11 c) comprises an extension of the upper thread of the first root (11 b) of the external thread (11), the face of the limiter (11 c) towards the second root (11 a) of the external thread (11) is wedge-shaped starting from the last zone of the second root (11 a) and rising until encountering the top of the extension of the upper thread of the first root (11 b), and the other face of the limiter (11 c) facing the first root (11 b) formed by extending the upper thread of the first root (11 b) is in the form of a flat wall.
3. An automatic opening device for aseptic carton packages, comprising:
A box mouth (10) having a variable direction external thread (11), said external thread (11) having at least one start point, said external thread (11) comprising a right hand first root (11 b) connected to a left hand second root (11 a), a lower region of the box mouth (10) being connected to a bottom assembly (12);
A cap (20) having a drive assembly (26) and an internal thread section (21), the internal thread section (21) being intended to be screwed onto an external thread (11) of the mouthpiece (10); and
A cutting assembly (30) connected to one of the drive assemblies (26) of the mouthpiece (10) and the cap (20);
it is characterized in that the method comprises the steps of,
The first root (11 b) of the external thread (11) is provided with a narrow channel (11 b '), said channel (11 b') allowing the internal thread section (21) of the cap (20) to withdraw when the cap (20) is first unscrewed from the right-hand first root (11 b) and preventing the internal thread section (21) of the cap (20) from re-entering the right-hand first root (11 b) of the external thread (11);
The automatic opening device further comprises an additional root (13), said additional root (13) being parallel to the first root (11 b) of the external thread (11), formed between the lower thread of the first root (11 b) and an additional thread (13 a) parallel to the lower thread of the first root (11 b), said additional root (13) being adapted to receive the internal thread segment (21) of the lid (20) when the lid (20) is screwed back onto the mouth (10).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR102019003364A BR102019003364A2 (en) | 2019-02-19 | 2019-02-19 | device for automatic opening of aseptic carton packs |
| BRBR1020190033649 | 2019-02-19 | ||
| PCT/BR2020/050036 WO2020168399A1 (en) | 2019-02-19 | 2020-02-11 | Device for automatic opening of aseptic cardboard packaging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113748071A CN113748071A (en) | 2021-12-03 |
| CN113748071B true CN113748071B (en) | 2024-05-07 |
Family
ID=69054144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080029964.2A Active CN113748071B (en) | 2019-02-19 | 2020-02-11 | Automatic opening device for aseptic paper box package |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN113748071B (en) |
| BR (1) | BR102019003364A2 (en) |
| WO (1) | WO2020168399A1 (en) |
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| GB2203729A (en) * | 1987-03-19 | 1988-10-26 | Metal Box Plc | Closure systems for containers |
| DE4342251C1 (en) * | 1993-12-10 | 1995-05-11 | Dental Kosmetik Gmbh Dresden | Twist lock for containers |
| US5494174A (en) * | 1995-03-15 | 1996-02-27 | Aptargroup, Inc. | Container with removal resistant closure |
| US7331479B2 (en) * | 2004-04-29 | 2008-02-19 | Rexam Delta Inc. | Child resistant container and cap |
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2019
- 2019-02-19 BR BR102019003364A patent/BR102019003364A2/en active IP Right Grant
-
2020
- 2020-02-11 WO PCT/BR2020/050036 patent/WO2020168399A1/en active Application Filing
- 2020-02-11 CN CN202080029964.2A patent/CN113748071B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6123212A (en) * | 1999-08-27 | 2000-09-26 | Alcoa Closure Systems International | Plastic closure with rotation-inhibiting projections |
| CN101316764A (en) * | 2006-04-04 | 2008-12-03 | Sig技术股份公司 | Reclosable pouring element for composite cardboard/plastic packaging |
| CN201358008Y (en) * | 2008-04-14 | 2009-12-09 | 刮拉瓶盖专利有限公司 | Sealing part for container |
| WO2015077847A1 (en) * | 2013-11-26 | 2015-06-04 | Costa Ivan Ferreira Da | Device for varying the screwing depth |
| CN107000908A (en) * | 2014-11-24 | 2017-08-01 | 伊科莫泰克技术创新有限公司 | Single alveolus screw thread converter |
| CN107000899A (en) * | 2014-11-25 | 2017-08-01 | 利乐拉瓦尔集团及财务有限公司 | Lid for opening device |
Also Published As
| Publication number | Publication date |
|---|---|
| BR102019003364A2 (en) | 2019-12-24 |
| CN113748071A (en) | 2021-12-03 |
| WO2020168399A1 (en) | 2020-08-27 |
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