Patent Description:
Food plays a significant role in our daily life. However, once exposed to air, food may easily get spoiled or rotten due to dampness, oxidation, or bacteria, causing severe food waste. Meanwhile, such spoiled food is harmful to the human body. In order to maintain food freshness, people have developed a vacuum packaging machine based on the principle of vacuum freshness preservation.

As shown in <FIG>, an external suction vacuum packaging machine is a commonly used vacuum packaging machine at present; and with the help of such external suction vacuum packaging machine and embossed vacuum bags, people can easily vacuum-package and store food in their family life and restaurant management. Before using the external suction vacuum packaging machine, an embossed vacuum bag with an appropriate length should be cut out from a vacuum bag roll according to a size of an article, so as to conveniently vacuum-package articles with various sizes. It is known that the vacuum bag roll is mainly packaged through a shrinkable film or a packaging box, which only has the packaging function. In the transportation process of the vacuum bag roll, the shrinkable film and the packaging box can only play a protective role. However, given that during use of the vacuum bag roll, a user needs to, based on the size of an article, cut out an embossed vacuum bag fitting the size of the article by himself/herself, the prior art mentioned-above still has the following technical problems:.

To address the above-mentioned technical problems, a new vacuum packaging machine is launched on the market. The new vacuum packaging machine includes a packaging machine body and a rolling bag bin arranged on the packaging machine body. The rolling bag bin is used for containing the vacuum bag roll, and is provided with a vacuum bag drawing port, a strip-shaped through hole is provided in the length direction beside the vacuum bag drawing port, a cutter is arranged in the through hole, and after a packaging bag with a required length is drawn out, the cutter can slide to cut off the vacuum bag. However, limited by the size and cost of the vacuum packaging machine, the volume of the rolling bag bin is small. The vacuum bag rolls contained in the rolling bag bin generally have a length of <NUM>, and some of them reach <NUM>. In addition, the foregoing vacuum packaging machine with the rolling bag bin is not extensively used. In consideration of size and cost, the existing vacuum packaging machine on the market is not equipped with any rolling bag bin, which requires users to cut the vacuum bags with their own cutters.

<CIT> describes a sliding cutter cartridge. The container has a base portion defining a compartment and a lid portion movable between an open position for accessing the compartment and a closed position for covering the compartment. The base portion includes the bottom panel, a rear panel extending from the bottom panel to an upper edge of the rear panel, and rear side ears extending from the rear panel and defining opposite sides of the base portion. The base portion further includes a front base panel extending upwardly from the bottom panel to a front tilt panel, the front tilt panel extending upwardly and inwardly from the front base panel to a free end. The lid portion is hingedly coupled to an upper edge of the back panel. The container further includes a cutter disposed on the front sloping panel. A blank and method for forming a container from a blank sheet are also provided.

<CIT> describes a container for dispensing selected portions of a web material and a method of making Such a container. The container is arranged to contain the web material and has an opening through which the web material can be led out of the container. A track is positioned such that web material led out of the container through the opening can be laid across the track. A cutter is capable of sliding along the track and of cutting web material laid across the track. At least in a packaged configuration for shipping, the track and cutter do not extend beyond an outline of the container.

<CIT> describes a roll-dispensed stock container is provided. The roll dispensed stock container has a recessed cutting track and can be assembled by computer aided manufacturing processes.

<CIT> describes a film packaging, in particular for household films, with a box in which a film roll is arranged, wound on a core and held rotatable in the box, wherein an opening is provided on the box which can be closed by a lid through which a tape-shaped film can be pulled out of the box, whereby in the region of the opening a cutting device with a sliding knife movable along a rail is provided.

<CIT> describes a roll film cutting device and a roll film packaging container employing the same. The roll film cutting device disclosed in an embodiment of the invention comprises: a base on which the roll film is placed and a wrapper of the roll film is detachably attached; a fixing unit which is hinge-coupled to one end of the base, and is close to the base to prevent the film placed on the base from being moved; and a cutting unit which is movable in a longitudinal direction and cuts the roll film inserted between the base and the fixing unit in a width direction. In the disclosed invention, the roll film is stably and easily cut and of industry standard size, therefore the number of equipment and processes for manufacturing the roll film can be reduced. In addition, the roll film cutting device is detachably installed in the packaging container so that the cutting device may be repetitively used in other packaging containers.

The objective of the present disclosure is to provide a packaging box which is conducive to storage, transport and cutting of vacuum bag rolls, meeting requirements of users for the use of vacuum bags.

The invention is defined by the features of the independent claim <NUM>.

Preferable embodiments of the invention are defined in the dependent claims <NUM>-<NUM>.

The present invention provides a packaging box which, as compared with the prior art, has the following beneficial effects:.

In the figures there are: box body <NUM>, accommodation cavity <NUM>, left side plate <NUM>, right side plate <NUM>, front side plate <NUM>, rear side plate <NUM>, top cover <NUM>, bag outlet <NUM>, cutting device <NUM>, cutting part <NUM>, guide rail <NUM>, protective cover <NUM>, recessed part <NUM>, first side wall <NUM>, second side wall <NUM>, mounting hole <NUM>, and connecting plate <NUM>.

A specific implementation of the present invention is now further described in detail by way of embodiments with reference to the accompanying drawings. The following embodiments are provided to illustrate the present invention and should not be construed as limiting the scope of the present invention which is defined by the appended claims.

In the description of the present disclosure, it should be understood that orientation or position relationships indicated by terms such as "upper", "lower", "left", "right", "top" and "bottom" are orientation or position relationships as shown in the figures. The terms are merely intended to facilitate and simplify the description of the present invention, rather than to indicate or imply that the mentioned device or components must have a specific orientation or must be constructed and operated in a specific orientation. Therefore, these terms should not be understood as a limitation to the present invention.

As shown in <FIG>, an embodiment of the present invention provides a packaging box comprising a box body <NUM>, a reel, and a cutting device <NUM>. The box body <NUM> is provided with an accommodation cavity <NUM> used for accommodating a vacuum bag roll, and is provided with a bag outlet <NUM>; the reel is rotatably arranged in the box body <NUM>, and is used for mounting the vacuum bag roll; the cutting device <NUM> comprises a cutting part <NUM> and a guide rail <NUM>, where the guide rail <NUM> is fixed to the box body <NUM>, and the cutting part <NUM> is slidably connected to the guide rail <NUM>; where a bag opening of the vacuum bag roll stretches out from the box body <NUM> to the guide rail <NUM> after passing through the bag outlet <NUM>.

Based on the foregoing setting, the packaging box according to embodiments of the present invention has the following beneficial effects:.

According to the present invention, the packaging box, as shown in <FIG>, further comprises a protective cover <NUM> arranged on the box body <NUM>, and the protective cover <NUM> covers both the bag outlet <NUM> and the cutting device <NUM>. Thus, the protective cover <NUM> has the following advantages:.

In some embodiments, the box body <NUM>, as shown in <FIG>, constitutes of paper boards which have the advantages of being convenient to manufacture and less costly.

In some embodiments, as shown in <FIG>, <FIG>, and <FIG>, as an alternative solution, the cutting device <NUM> may not comprise a guide rail <NUM>, where a slit is provided in the box body <NUM>, and the cutting part <NUM> is slidably connected to the slit of the box body <NUM>.

In some embodiments, as shown in <FIG>, the protective cover <NUM> and the box body <NUM> adhere to each other. Therefore, in the case that the packaging box is transported or there is no need to cut the vacuum bag, the protective cover <NUM> adheres to the box body <NUM> to protect the cutting device <NUM> and the drawn-out vacuum bag roll; and when it is necessary to cut the vacuum bag roll, the protective cover <NUM> is torn off from the box body <NUM>.

According to the invention, as shown in <FIG>, <FIG>, and <FIG>, the box body is provided with a recessed part <NUM> on which the cutting device <NUM> is arranged, and the protective cover <NUM> covers the recessed part <NUM>. Thus, the recessed part <NUM> is used for placing the cutting device <NUM> and the drawn-out vacuum bag roll so as to prevent the cutting device <NUM> from contacting outside objects in the transportation process of the packaging box, and to protect the drawn-out vacuum bag roll from being exposed to the outside.

In some embodiments, as shown in <FIG>, the bag outlet <NUM> is provided in the recessed part <NUM>. Therefore, compared with arranging the bag outlet <NUM> outside the recessed part <NUM>, not only is the distance between the bag outlet <NUM> and the cutting device <NUM> of these embodiments shorter but also is the length of the vacuum bag roll exposed outside the box body <NUM> of these embodiments shorter, making the vacuum bag roll more sanitary.

According to the invention, as shown in <FIG>, the recessed part <NUM> comprises a first side wall <NUM> and a second side wall <NUM>, where the first side wall <NUM> is arranged at a top end of the second side wall <NUM>, and an L-shaped structure is formed between the first side wall <NUM> and the second side wall <NUM>. Therefore, the recessed part <NUM> is a bent structure which can improve the structural strength of the recessed part <NUM>.

As an alternative solution, the recessed part <NUM> can also be arranged as a form of a slope or other structural forms.

In some embodiments, as shown in <FIG>, the box body <NUM> comprises a left side plate <NUM>, a right side plate <NUM>, a front side plate <NUM>, a rear side plate <NUM>, and a top cover <NUM>, where the front side plate <NUM>, the left side plate <NUM>, the rear side plate <NUM>, and the right side plate <NUM> are interconnected, the top cover <NUM> is movably arranged at top ends of the left side plate <NUM>, the right side plate <NUM>, the rear side plate <NUM> and the recessed part <NUM>, and a turning direction of the top cover <NUM> is to turn forward. Thus, a user can turn over the top cover <NUM> to check the use of the vacuum bag roll, so as to conveniently replace the vacuum bag roll as needed.

In some embodiments, as shown in <FIG>, the packaging box further comprises a connecting plate <NUM>, a left side and a right side of the connecting plate <NUM> adhere to the left side plate <NUM> and the right side plate <NUM> respectively, and a top of the connecting plate <NUM> is connected with the top cover <NUM>. In this way, when the connecting plate <NUM> adheres to the left side plate <NUM> and the right side plate <NUM>, the connecting plate <NUM> integrates the top cover <NUM>, the left side plate <NUM>, and the right side plate <NUM> into one, thus enhancing the strength of connection among the top cover <NUM>, the left side plate <NUM>, and the right side plate, and then improving the compressive strength of the box body <NUM>.

According to the invention, as shown in <FIG>, the cutting device <NUM> is arranged on the second side wall <NUM>, and the bag outlet <NUM> is arranged at a joint of the first side wall <NUM> and the second side wall <NUM>. Thus, compared with arranging the bag outlet <NUM> in other parts of the second side wall <NUM> (such as an upper part of the second side wall <NUM>), the arrangement of the embodiment makes the shortest distance between the bag outlet <NUM> and the cutting device <NUM>, and a length of the vacuum bag roll stretching out of the box body <NUM> can be shorter, so as to further guarantee the sanitation of the drawn-out vacuum bag roll.

According to the invention, a height of the bag outlet <NUM> is not greater than <NUM>. Tests show that when the height of the bag outlet <NUM> is not greater than <NUM>, frictional force between the vacuum bag roll and the bag outlet <NUM> is unlikely to be excessively large or small, such that the user conveniently draws out the vacuum bag roll while the vacuum bag roll is less likely to automatically roll back to the accommodation cavity <NUM> of the box body <NUM>.

In some embodiments, as shown in <FIG>, the left side plate <NUM>, the right side plate <NUM>, and the rear side plate <NUM> are all folded plates, and a top of the front side plate <NUM> is recessed to form the recessed part <NUM>. Therefore, the left side plate <NUM>, the right side plate <NUM>, the rear side plate <NUM>, and the front side plate <NUM> are all bent structures, thereby improve the structural strength and the compressive strength of the box body <NUM>; besides, an internal pit inside the box body <NUM> is not exposed, so as to improve the aesthetics of the box body <NUM>.

As an alternative solution not forming part of the claimed invention, the box body <NUM> may not be provided with the recessed part <NUM>, the cutting device <NUM> is arranged at a top end of the box body <NUM>, and the protective cover <NUM> is arranged at a top end of the box body <NUM> and covers the cutting device <NUM> and the bag outlet <NUM> so as to protect the cutting device <NUM> in the transportation process;
illustratively, the protective cover <NUM> may be paper boards, foam, or other materials.

In some embodiments, as shown in <FIG>, the left side plate <NUM> and the right side plate <NUM> are each provided with a mounting hole <NUM>, an overturning part is arranged on the inner wall of each mounting hole <NUM>, two opposite sides of the reel pass through the two mounting holes <NUM> respectively, and the outer wall of the reel abuts against the overturning part. Therefore, as the box body <NUM> is very likely to vibrate in the process of using, carrying, or storing, frictional force is formed between the reel and the overturning part during mutual contact thereof, such that the reel is less likely to get loosened, and thus the vacuum bag roll is less likely to automatically roll back to the accommodation cavity of the box body <NUM>. Accordingly, the situation that the vacuum bag roll rolls back to the accommodation cavity <NUM> of the box body <NUM> and then the vacuum bag roll needs to be drawn out again is avoided, such that the operational convenience is greatly improved for the user.

In some embodiments, as shown in <FIG>, a first tongue is arranged at a bottom of the top cover <NUM>, a first slot is arranged at a top of the left side plate <NUM>, and the first tongue is inserted in the first slot;.

In some embodiments, as shown in <FIG>, the cutting part <NUM> comprises s a slide block and a cutting knife, where the slide block is arranged at a top end of the cutting knife, and the cutting knife is slidably connected to the guide rail <NUM>. In this way, a user slides the slide block to make the cutting knife slide along the slide rail <NUM> and then cut the vacuum bag roll, thereby guaranteeing that an end face of the vacuum bag obtained after cutting is flush.

In conclusion, the embodiments of the present disclosure provide the packaging box which is intended for achieving the purposes of facilitating storage, transport, and cutting the vacuum bag rolls as well as meeting the requirements of the user for using the vacuum bag rolls.

Claim 1:
A packaging box, comprising:
a box body (<NUM>), wherein the box body (<NUM>) is provided with an accommodation cavity (<NUM>) accommodating a vacuum bag roll, and the box body (<NUM>) is provided with a bag outlet (<NUM>);
a reel, wherein the reel is rotatably arranged in the box body (<NUM>), and the vacuum bag roll is mounted on the reel; and
a cutting device (<NUM>), wherein the cutting device (<NUM>) comprises a cutting part (<NUM>), and the cutting part (<NUM>) is slidably connected to the box body (<NUM>); and
a protective cover (<NUM>) arranged on the box body (<NUM>); wherein
the protective cover (<NUM>) covers both the bag outlet (<NUM>) and the cutting device (<NUM>);
a bag opening of the vacuum bag roll stretches out from the box body (<NUM>) to the cutting part (<NUM>) after passing through the bag outlet (<NUM>);
the box body (<NUM>) is provided with a recessed part (<NUM>) on which the cutting device (<NUM>) is arranged, the protective cover (<NUM>) covers the recessed part (<NUM>), and the bag outlet (<NUM>) is arranged on the recessed part (<NUM>);
the recessed part (<NUM>) comprises a first side wall (<NUM>) and a second side wall (<NUM>), the first side wall (<NUM>) is arranged at a top end of the second side wall (<NUM>), and an L-shaped structure is formed between the first side wall (<NUM>) and the second side wall (<NUM>);
the cutting device (<NUM>) is arranged on the second side wall (<NUM>), and the bag outlet (<NUM>) is arranged at a joint of the first side wall (<NUM>) and the second side wall (<NUM>); and
a height of the bag outlet (<NUM>) is not greater than <NUM>.