CN110902128A - Safe easy-to-open metal packaging container - Google Patents
Safe easy-to-open metal packaging container Download PDFInfo
- Publication number
- CN110902128A CN110902128A CN201811088835.1A CN201811088835A CN110902128A CN 110902128 A CN110902128 A CN 110902128A CN 201811088835 A CN201811088835 A CN 201811088835A CN 110902128 A CN110902128 A CN 110902128A
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- Prior art keywords
- groove
- wall
- container
- opening
- sealing
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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
- B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
- B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
- B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
- B65D41/3428—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges
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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
- B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
- B65D41/325—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings with integral internal sealing means
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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
- B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
- B65D53/04—Discs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
The invention discloses a safe and easily-opened metal packaging container which comprises a container body and a twist cover, wherein an external thread is formed on the outer wall of a container opening, an internal thread matched with the external thread is formed on a cover wall, two mutually parallel convex rings surrounding the cover wall are arranged at the lower part of the cover wall, an annular groove is formed between the two convex rings, a plurality of strip-shaped notches are formed in the groove bottom of the annular groove along the circumferential direction of the cover wall, a bridging is formed by the cover walls between the adjacent notches, the bridging is of an obliquely-arranged equal-width structure, an upper acute angle is formed between the right side of the upper end of the bridging and the notch on the right side of the bridging, and a lower acute angle is formed between the left side of the lower. The invention effectively solves the problems that the opening force required by the packaging container in the prior art is large and an operator is easy to be injured in the opening process, greatly facilitates the opening of the packaging container, improves the safety of the opening process and has high practical value.
Description
Technical Field
The invention relates to the technical field of packaging containers, in particular to a safe and easy-to-open metal packaging container.
Background
The bridge on the twist cover in the prior art is usually rectangular and is vertically connected with the anti-theft ring on the twist cover, when the cover body is rotated, the bridge is broken under the action of torsion (transverse shearing force) generated by rotation of the cover body, namely, the twist cover can be rotated to open only if the bridge is broken. The rectangular bridging structure is characterized in that after a large transverse shearing force is applied, the material is subjected to yielding fracture, the fracture point is basically in the middle of the bridging (see figure 13), the torsion required during twisting is large, the torsion required for rotating the cover body after fracture is suddenly reduced, a hand holding the cover body is forced to rotate at an angle along with the cover body quickly because the force is not removed soon, therefore, the opening difficulty is increased, the bridging and the edge of a cut are basically exposed outside, a plurality of sharp fracture points are formed after the bridging is twisted off, and the hand stopping and rotating quickly along with the cover body is easily scratched by a security ring or a sharp object on a bottle body (note that the sharp object exists on the security ring and the mold seam of some plastic bottle bodies), and a great potential safety hazard exists. And on the other hand, in the process of screwing the cover to seal the cover, the cover is sleeved into the opening of the container, after a certain pressure is applied to the cover top, the thread forming cutter in the middle of the side edge of the cover and the sealing cutter at the position of the anti-theft ring at the lower part are rotated, the thread of the cover is formed according to the thread of the opening of the container, and the anti-theft ring of the cover is formed according to the neck structure of the anti-theft ring. In order to ensure the sealing performance of the cover after the cover is closed, a certain pressure is often applied to the top of the cover during the sealing, so that the sealing gasket and the container opening have certain interference to ensure the sealing, but the excessive pressure of the cover can cause the problems of container collapse, container anti-theft ring neck deformation and the like. The twist cover cannot restore to an original state after being opened and bridged to break so as to play a role in theft prevention, but in the practical process, the twist cover can be rotated at a certain angle firstly when being opened due to the fact that the container opening part cannot be completely consistent in forming, the anti-theft ring cannot be particularly attached to a convex ring of the container when being curled, the anti-theft ring and the twist cover move upwards for a small end distance together, the anti-theft ring can be clamped by the convex ring, and the bridge of the twist cover can be broken only by continuously rotating the twist cover; especially, the container of metal material, its container mouth neck is used for limiting its cross section of bulge loop that the anti-theft ring moved up and can only form circular-arc structure, therefore can't closely laminate with it when the roll-off cover is opened, generally can rotate certain angle earlier when turning off the lid and opening, just so have a potential safety hazard, touch and turn off the lid and cause turning off the lid to rotate (or become flexible) to a certain extent when turning off the lid in some transport, storage product, the compression volume of sealed pad diminishes before the bridge has not yet fractured, at this moment because the leakproofness worsens probably to lead to the shelf life of product to shorten greatly.
Disclosure of Invention
The invention aims to solve the problems that the metal packaging container in the prior art needs large opening force in the opening process and an operator is easy to hurt, and provides a safe and easy-to-open metal packaging container which needs small opening force and can greatly improve the safety of the metal packaging container in the opening process.
Another object of the present invention is to provide a safe and easy-to-open metal packaging container for solving the problems of container collapse and container neck deformation of anti-theft ring caused by excessive capping pressure during capping process of the metal packaging container in the prior art, which can greatly reduce the problems of container collapse and container neck deformation of anti-theft ring caused by capping process of the metal packaging container.
The third purpose of the invention is to solve the problem that the metal packaging container in the prior art is easy to have poor sealing performance, so that the shelf life of the product is greatly shortened, and provide a safe and easy-to-open metal packaging container which has the characteristics of simple structure, simple structure and good sealing performance.
The invention adopts a specific scheme for solving the technical problems that the safe and easily-opened metal packaging container comprises a container body and a twist cover, wherein a cylindrical container opening is formed on the packaging container, an external thread is formed on the outer wall of the container opening, the twist cover comprises a cover top and a cover wall formed by downward extending of the outer edge of the cover top, a sealing gasket is arranged on the lower surface of the cover top, an internal thread matched with the external thread is formed on the cover wall, two convex rings which are parallel to each other and surround the cover wall are arranged at the lower part of the cover wall, an annular groove is formed between the two convex rings, a plurality of strip-shaped cuts are arranged at the groove bottom of the annular groove along the circumferential direction of the cover wall, the cuts penetrate through the cover wall, the cover wall below the cuts forms anti-theft rings, the cover walls between the adjacent cuts form a bridge, and the anti-theft rings are connected with the cover wall above the cuts through, the bridge is of an obliquely arranged equal-width structure, one end of the bridge, which is close to the cover top, is taken as a reference, one end of the bridge, which is connected with the anti-theft ring, deviates to the right side, an upper acute angle is formed between the right side of the upper end of the bridge and the cut on the right side of the bridge, and a lower acute angle is formed between the left side of the lower end of the bridge and the cut on the left side of the. The bridge between the connecting cover body and the anti-theft ring is designed to be in inclined connection (the whole bridge is in a diamond shape), an upper acute angle is formed between the right side of the upper end of the bridge and the notch on the right side of the bridge, a lower acute angle is formed between the left side of the lower end of the bridge and the notch on the left side of the bridge, and stress concentration points are formed at the corners of the upper acute angle and the lower acute angle, so that the upper acute angle and the lower acute angle are easily torn at. When the container is opened, the anti-theft ring is clamped after rotating a small angle, the bridge is stressed to be pulled to a position vertical to the anti-theft ring, and then the upper part of the bridge is inclined to the right and then is broken. Such bridging breaks require a process that does not break as abruptly as prior art bridges. In addition, the bridge is formed into an inclined structure, only the bridge deforms when the bridge is straightened, the required torsion is small, the bridge starts to crack due to stress concentration points at acute angles of the bridge when the bridge is straightened, and the bridge is completely cracked after the bridge is rotated, so that the bridge cracking process is also a gradual change process, the torsional force of the bridge is obviously smaller than that of the existing scheme, and the buffer function is achieved. In addition, two convex rings which are parallel to each other and surround the cover wall are arranged between the lower part of the cover body and the anti-theft ring, an annular groove is formed between the two convex rings, and the cut for separating the anti-theft ring and the bridging between the adjacent cuts are arranged at the groove bottom of the annular groove, so that the cut and the bridging are both positioned at the concave part of the groove when the cover is turned and turned, the palm is not easily contacted with the palm of an operator, and the palm can be prevented from being injured by sharp after the anti-theft ring is broken (namely the bridging is broken). Therefore, the invention solves the problems that the opening force required by the packaging container in the prior art is large and an operator is easy to be injured in the opening process, greatly facilitates the opening of the packaging container and improves the safety of the packaging container in the opening process.
Preferably, the included angle between the central line of the bridge and the horizontal plane is 45-75 degrees; the bridge is provided with an upper pre-split opening at the connecting part of the upper acute angle, the upper pre-split opening extends along the circumferential direction of the cover wall, the opening of the upper pre-split opening is communicated with the notch, and the length of the upper pre-split opening in the circumferential direction of the cover wall is 10-20% of the width of the bridge. The pre-splitting is arranged at the connecting part of the bridge and the upper acute angle, so that the force required for tearing the upper part of the bridge when the cover rotates is smaller, and the opening of the packaging container is more facilitated. Meanwhile, the pre-split is arranged at the connecting part of the bridge and the upper acute angle, so that the upper end of the bridge can be ensured to be firstly broken, the broken points of the bridge are consistent and neat, and the broken residual sections of the bridge are all left on one side of the anti-theft ring due to the fact that the upper end of the bridge is firstly broken, and the repeated use of the cover is facilitated.
Preferably, the bridge is formed with a lower pre-split at the connection with the lower acute angle, the lower pre-split extends along the circumferential direction of the cover wall and the opening of the lower pre-split is communicated with the notch, and the length of the lower pre-split in the circumferential direction of the cover wall is 50-70% of the length of the upper pre-split. The connecting portion setting of bridge and lower acute angle is split in advance down and can be so that the lid is opened more easily, and the length of split in advance is less than the length of split in advance down simultaneously, and the anti-theft ring one side has all been stayed to the remaining section after the bridge fracture, is favorable to the used repeatedly of lid.
The upper pre-splitting opening and the lower pre-splitting opening can be synchronously formed by improving the die structure when the notch is punched, and the appearance of the twist cover cannot be influenced because the upper pre-splitting opening and the lower pre-splitting opening are micro-cracks.
Preferably, an inner seal ring for abutting against an inner wall of the container mouth edge portion and an outer seal ring for abutting against an outer wall of the container mouth edge portion are integrally extended downward from an outer peripheral portion of the gasket, and a seal groove with a downward opening is formed between the inner seal ring and the outer seal ring. The twist cover is provided with an inner sealing ring and an outer sealing ring at the matching part of the periphery of the sealing gasket and the container opening, a sealing groove for being sleeved in the edge part of the container opening is formed between the two sealing rings, so that after the edge part of the container opening enters the sealing groove, the inner side surface of the outer sealing ring (namely the outer side groove wall of the sealing groove) clings to the outer wall of the edge part of the container opening to form outer sealing, the outer side surface of the inner sealing ring (namely the inner side groove wall of the sealing groove) clings to the inner wall of the edge part of the container opening to form inner sealing, and the groove bottom of the sealing groove clings to the top of the edge.
Preferably, the container body is integrally formed by a single layer of metal material, the opening edge part of the container opening is formed by folding four layers of metal materials, the top of the opening edge part is arc-shaped, and the bottom of the sealing groove is matched with the top of the opening edge part in shape. The container body is integrally formed by single-layer metal materials, the opening edge part of the container opening is formed by four layers of metal materials in a winding mode, the cross section of the opening edge part is similar to an oval shape, the top of the opening edge part is in a circular arc shape, the opening edge part is favorable for being installed into a sealing groove of a twist-off cover, the shape of the groove bottom of the sealing groove is matched with that of the top of the opening edge part, namely the cross section of the groove bottom of the sealing groove is also in a circular arc shape, and the sealing.
Preferably, the top surface of the sealing gasket vertically corresponding to the sealing groove is provided with a material containing groove, the bottom surface of the material containing groove is arc-shaped, the central line of the cross section of the material containing groove is superposed with the central line of the cross section of the sealing groove, the opening width of the material containing groove is 50-70% of the width of the sealing groove, and the depth of the material containing groove is 30-60% of the opening width of the material containing groove; when the safe and easily-opened metal packaging container is used for sealing the container opening, the inner side surface of the outer sealing ring is tightly attached to the outer wall of the opening edge part of the container, the outer side surface of the inner sealing ring is tightly attached to the inner wall of the opening edge part of the container, the groove bottom of the sealing groove is tightly attached to the top surface of the opening edge part of the container, the cross-sectional area of the material containing groove is reduced, and the groove bottom of the material containing groove. According to the invention, the material containing groove is arranged on the top surface of the sealing gasket above the sealing groove, the material containing groove is arranged on the surface, which is in contact with the cover body, of the sealing gasket, when the cover is turned off to cover the container opening, downward pressure is generated when the cover is covered, and the reaction force generated by interference of the sealing gasket is partially absorbed by the deformation of the material containing groove, so that the reaction force can not be completely acted on the container, the bearing pressure of the container is greatly reduced, and the problems that the container is easily collapsed, the neck part of a container anti-theft ring is deformed and the like due to overlarge covering pressure in the covering process of the packaging container in the prior art are solved, so that the problems that the container is collapsed, the neck part of the container anti-theft ring is deformed and the.
Preferably, the height of the cross section of the inner sealing ring is greater than that of the cross section of the outer sealing ring (namely the length of the downward extension of the inner sealing ring is greater than that of the downward extension of the outer sealing ring), an interference ring is convexly arranged at the lower part of the outer side surface of the inner sealing ring, and the distance between the interference ring and the bottom of the sealing groove is greater than the axial moving distance of the cover top when the twist-off cover opening bridge is broken; the lower extreme of the lateral surface of interior sealing ring is equipped with direction arc limit, the last edge on direction arc limit is connected with the lower limb of interference ring. The interference ring is convexly arranged at the lower part of the outer side surface of the inner sealing ring, the interference ring is of an annular belt structure which is protruded on the outer side surface of the inner sealing ring, the interference ring can play a role of strengthening sealing when the outer side surface of the inner sealing ring is tightly attached to the inner wall of a container opening, and because the distance between the interference ring and the bottom of the sealing groove is greater than the axial moving distance of a cover top when the twist cover is opened and the anti-theft ring is broken, namely, in the initial stage of the twist cover rotating opening, when the twist cover moves a certain distance in the axial direction but the anti-theft ring is not broken, the interference ring is always tightly attached to the inner wall of the container opening, the sealing between the inner sealing ring and the inner wall of the container opening before the anti-theft ring is broken is ensured, so that; the guide arc-shaped edge plays a guide role when the twist cover is matched with the container opening.
Preferably, an annular tapered wall with a small upper part and a large lower part is formed on the cover wall close to the cover top, the upper section of the tapered wall is tightly attached to the outer sealing ring to form an outer sealing ring extrusion part, when the cover is unscrewed to seal the container opening, the pressure of the outer sealing ring on the outer wall of the edge part of the container opening is greater than the pressure of the inner sealing ring on the inner wall of the edge part of the container opening, and the vertex angle of the tapered wall is 20-40 degrees. The invention forms an annular tapered wall with a small upper part and a big lower part on the cover wall close to the cover top, namely the upper section of the twist cover is of a structure with a small upper part and a big lower part, the cross section of the cover wall of the section is inclined, the outer sealing ring is extruded by the tapered wall to form an extrusion part, the inner side surface of the outer sealing ring is tightly attached to the outer wall of the container opening after being extruded by the extrusion part, and the pressure of the outer sealing ring to the outer wall of the container opening is greater than that of the inner sealing ring to the inner wall of the container opening, thus ensuring the sealing of the outer sealing ring to the container opening, solving the problem of poor sealing performance of the traditional process in the form of pressing the container opening by the cover top and a single-side (inner side) sealing ring, and simultaneously avoiding the problem of difficult opening of the packaging container in the traditional process due to the large friction force generated by the cover top and the double-side (inner and outer side) sealing rings to press the container opening in the traditional process The problem is that the opening of the packaging container is convenient on the premise of ensuring the sealing. The top angle is an included angle between conical walls on two sides of the cover top, the top angle is too small, and the lateral extrusion force of the outer sealing ring to the container opening is too large, so that the opening force of the packaging container is easily too large; if the vertex angle is too large, the pressure of the outer sealing ring on the container opening is too small, and although the opening is easy, the sealing performance is poor.
Preferably, the inner side surface of the inner sealing ring and the lower surface of the sealing gasket (i.e. the bottom surface of the sealing gasket which is close to the inner sealing ring and does not extend downwards) are in transition connection through a compression-resistant cambered surface, and the radius of the compression-resistant cambered surface is 0.7-1.3 times of the height of the cross section of the inner sealing ring. The compression-resistant cambered surface is arranged between the inner side surface of the inner sealing ring and the lower surface of the sealing gasket, so that the compression resistance of the inner sealing ring can be obviously improved, and the sealing effect of the interference ring on the inner wall of the container opening is strengthened.
Preferably, a decompression groove extending along the sealing groove is arranged on one side, close to the inner sealing ring, of the groove bottom of the sealing groove, the opening width of the decompression groove is 10% -25% of the width of the groove bottom of the sealing groove, and the depth of the decompression groove is 15% -30% of the width of the groove bottom of the sealing groove; the center line of the cross section of the pressure reducing groove is parallel to the center line of the cross section of the sealing groove, the inner side groove wall of the pressure reducing groove and the inner side groove wall at the groove bottom of the sealing groove are on the same cylindrical surface (namely the inner side groove wall of the pressure reducing groove is formed by extending the inner side groove wall of the sealing groove close to the groove bottom), and the groove bottom of the pressure reducing groove is arc-shaped. The function of the pressure reducing groove is to properly reduce the resistance of the inner sealing ring entering the container opening, and avoid the serious damage to the sealing performance of the container caused by the excessive pressing of the sealing gasket on the upper edge of the opening of the container to cause wrinkles at the interference ring due to the excessive resistance when the interference ring and the pressure-resistant arc surface cause the safe and easy-to-open metal packaging container to cover the container opening. Although the resistance when the safe and easy-to-open metal packaging container is used for sealing the container opening can be reduced by reducing the compression-resistant arc surface, the influence on the sealing performance of the interference ring is large, the pressure reduction groove can reduce the influence to the minimum degree, and meanwhile, the interference ring is prevented from being wrinkled, so that the method is an ideal technical scheme; on the other hand, the size of the cross section of the pressure reducing groove has a great influence on the sealing performance, and the oversize pressure reducing groove not only influences the sealing of the top end of the container mouth, but also reduces the sealing performance of the interference ring, so that the pressure reducing groove needs to be controlled within a reasonable range.
Preferably, the upper part of the cover wall is provided with a plurality of internal pressure release openings punched inwards along the circumferential direction of the cover wall, and the cover wall at the lower side edge of the internal pressure release openings is bent inwards to form an inwards inclined plane structure. The internal pressure release port is used for releasing gas or liquid in the container in time when the pressure in the container is overlarge, so that the serious result caused by direct flying of a twist cover due to overlarge pressure in the container is avoided.
The invention has the beneficial effects that: 1. the problem of prior art's packaging container need open the power greatly and the operator is injured easily at the opening in-process is solved, improve packaging container in the opening security greatly. 2. The problems that the container is easily collapsed and the neck of the anti-theft ring of the container is deformed due to overlarge capping pressure in the capping process of the packaging container in the prior art are solved, and the problems that the container is collapsed and the neck of the anti-theft ring of the container is deformed in the capping process of the packaging container are greatly reduced. 3. The problem of prior art's packaging container appear the leakproofness variation easily, lead to the product shelf life to shorten greatly is solved.
Drawings
FIG. 1 is a schematic view of a twist-off cap for a packaging container according to the present invention;
FIG. 2 is a schematic view of an overall structure of the packaging container of the present invention; (ii) a
FIG. 3 is an enlarged view of a portion of the twist-off cover bridge of the present invention;
FIG. 4 is another enlarged partial view of the twist-off cap bridge of the present invention;
FIG. 5 is a partial structural cross-sectional view of the twist-off cap of the present invention;
FIG. 6 is a cross-sectional view of another alternate construction of the twist-off cap of the present invention;
FIG. 7 is a partial cross-sectional view of the twist-off cap of the present invention closing the mouth of a container;
FIG. 8 is a cross-sectional view of another alternate construction of the twist-off cap of the present invention for capping the mouth of a container;
FIG. 9 is a schematic view of the invention in a stressed state during twisting of the lid to close the mouth of the container;
FIG. 10 is an enlarged view of a portion of the twist-off lid bridge fracturing process of the present invention;
FIG. 11 is an enlarged view of a portion of the twist-off lid bridge fracturing process of the present invention;
FIG. 12 is an enlarged view of a portion of the twist-off lid bridge of the present invention at break;
fig. 13 is a partially enlarged view of a related art twist-off lid bridge at the time of fracture.
In the figure: 1. the anti-theft container comprises a cover top, 2 parts of a cover wall, 3 parts of a sealing gasket, 4 parts of a convex ring, 5 parts of an annular groove, 6 parts of a notch, 7 parts of an anti-theft ring, 8 parts of a bridge, 9 parts of an upper acute angle, 10 parts of an upper pre-split, 11 parts of a lower acute angle, 12 parts of a lower pre-split, 13 parts of a container opening, 14 parts of an inner sealing ring, 15 parts of an outer sealing ring, 16 parts of a sealing groove, 17 parts of a container groove, 18 parts of an interference ring, 19 parts of a guide arc-shaped edge, 20 parts of a conical wall, 21 parts of an extrusion part, 22 parts of a compression-resistant arc surface, 23 parts of a decompression groove, 24.
Detailed Description
The following further describes embodiments of the present invention by way of examples, with reference to the accompanying drawings.
Example 1
In embodiment 1 shown in fig. 1 and 2, a safe and easily-opened metal packaging container comprises a container body 25 and a twist cover, wherein a cylindrical container opening 26 is formed in the packaging container, an external thread is formed on the outer wall of the container opening, the twist cover comprises a cover top 1 and a cover wall 2 formed by downward extending of the outer edge of the cover top, a sealing gasket 3 is arranged on the lower surface of the cover top, an inner sealing ring 14 abutted to the inner wall of a container opening edge 13 and an outer sealing ring 15 abutted to the outer wall of the container opening edge are integrally extended downwards from the outer peripheral part of the sealing gasket, and a sealing groove 16 with a downward opening is formed between the inner sealing ring and the outer sealing ring. The container body is integrally formed by a single-layer metal material, the opening edge part of the container opening is formed by four layers of metal materials in a winding mode, the top of the opening edge part is arc-shaped, and the groove bottom of the sealing groove is matched with the top of the opening edge part in shape. Lid wall middle part be equipped with the internal thread of external screw thread adaptation, the lower part of lid wall is equipped with two bulge loops 4 that are parallel to each other and encircle the lid wall, constitutes annular groove 5 between two bulge loops, and annular groove's tank bottom department is equipped with the long banding incision 6 of a plurality of along lid wall circumference, the incision runs through the lid wall, the lid wall of incision below constitutes theftproof ring 7, and the lid wall between the adjacent incision constitutes the bridge 8, the theftproof ring is connected through the lid wall of bridge and incision top, the bridge be the equal width structure that the slope set up to the one end that is close to the lid top of bridge is the benchmark, and the one end that the bridge is connected with the theftproof ring is to the right side skew (see fig. 3). An upper acute angle 9 is formed between the right side of the upper end of the bridge and the notch on the right side of the bridge, a lower acute angle 11 is formed between the left side of the lower end of the bridge and the notch on the left side of the bridge, and the included angle between the central line of the bridge and the horizontal plane is 60 degrees; the upper part of the cover wall is provided with a plurality of internal pressure release openings 24 which are punched inwards along the circumferential direction of the cover wall, and the cover wall at the lower side of the internal pressure release openings is bent inwards to form an inwards inclined plane structure.
Example 2
In embodiment 2 shown in fig. 4, the bridge is formed with an upper pre-split opening 10 at the connection part of the upper acute angle, the upper pre-split opening extends along the circumferential direction of the cover wall and the opening of the upper pre-split opening is communicated with the cut, and the length of the upper pre-split opening in the circumferential direction of the cover wall is 15% of the width of the bridge; the bridge is formed with a lower pre-split 12 at the junction with the lower acute angle, the lower pre-split extending in the circumferential direction of the lid wall and having its opening communicating with the cut, the length of the lower pre-split in the circumferential direction of the lid wall being 70% of the length of the upper pre-split, the rest being the same as in embodiment 1.
Example 3
In embodiment 3 shown in fig. 5, the top surface of the sealing gasket corresponding to the upper and lower parts of the sealing groove is provided with a material accommodating groove 17, the bottom surface of the material accommodating groove is arc-shaped, the center line of the cross section of the material accommodating groove coincides with the center line of the cross section of the sealing groove, the opening width of the material accommodating groove is 60% of the width of the sealing groove, and the depth of the material accommodating groove is 45% of the opening width of the material accommodating groove; the lower end of the outer side surface of the inner sealing ring is provided with a guide arc-shaped edge 19, and the upper edge of the guide arc-shaped edge is connected with the lower edge of the interference ring. In this embodiment, the height of the cross section of the inner seal ring is greater than that of the cross section of the outer seal ring, an interference ring 18 (the left part of the dotted line in the drawing) is convexly arranged at the lower part of the outer side surface of the inner seal ring, the distance between the interference ring and the groove bottom of the seal groove is greater than the axial moving distance of the cap top when the twist-off cap opening bridge is broken, and the rest is the same as that in embodiment 1 or embodiment 2.
Example 4
In embodiment 4 shown in fig. 6, an annular tapered wall 20 with a small top and a large bottom is formed on the cover wall close to the cover top, the upper section of the tapered wall is tightly attached to the outer sealing ring to form an outer sealing ring squeezing portion 21, when the cover is unscrewed to cover the container opening, the pressure of the outer sealing ring on the outer wall of the rim portion of the container opening is greater than the pressure of the inner sealing ring on the inner wall of the rim portion of the container opening, and the apex angle of the tapered wall is 30 degrees. The inner side surface of the inner sealing ring is in transitional connection with the lower surface of the sealing gasket through a compression-resistant arc surface 22, and the radius of the compression-resistant arc surface is 1.1 times of the height of the cross section of the inner sealing ring. A decompression groove 23 extending along the sealing groove is arranged on one side, close to the inner sealing ring, of the groove bottom of the sealing groove, the opening width of the decompression groove is 18% of the width of the groove bottom of the sealing groove, and the depth of the decompression groove is 23% of the width of the groove bottom of the sealing groove; the center line of the cross section of the pressure reducing groove is parallel to the center line of the cross section of the sealing groove, the inner side groove wall of the pressure reducing groove and the inner side groove wall at the groove bottom of the sealing groove are on the same cylindrical surface, and the groove bottom of the pressure reducing groove is arc-shaped. When the container opening is sealed by the packaging container, the inner side surface of the outer sealing ring is tightly attached to the outer wall of the opening edge part of the container, the outer side surface of the inner sealing ring is tightly attached to the inner wall of the opening edge part of the container, the groove bottom of the sealing groove is tightly attached to the top surface of the opening edge part of the container, the cross sectional area of the material containing groove is reduced, the groove bottom of the material containing groove is close to the lower surface of the cover top (see figure 8), and the rest is the same as.
The bridging frame connecting the cover body and the anti-theft ring is designed to be in inclined connection (a diamond structure), the inclined direction is that the upper part is towards the left, the lower part is towards the right, the anti-theft ring is clamped after rotating for a small angle when the container is opened, the cover body continues to rotate anticlockwise, the upper pre-splitting opening at the upper end is firstly torn after the bridging frame is straightened, the length of the splitting opening is lengthened (shown in figure 10), the cover body continues to rotate anticlockwise, the upper end of the bridging frame is inclined towards the right, the length of the upper pre-splitting opening is further lengthened (shown in figure 11) until the upper end of the bridging frame is completely broken, the notches at the two sides of the bridging. The bridge breaking process is a gradual change process, and the twisting-off force of the bridge breaking process is obviously smaller than that of the conventional scheme, so that the bridge breaking process has a buffering function. Secondly, two convex rings which are parallel to each other and surround the cover wall are arranged between the lower part of the cover body and the anti-theft ring, an annular groove is formed between the two convex rings, and the cut for separating the anti-theft ring and the bridging frame between the adjacent cuts are arranged at the groove bottom of the annular groove, so that the cut and the bridging frame are both positioned at the concave part of the groove and are not easy to contact with the palm of an operator when the cover is turned and twisted, the palm can be prevented from being injured by sharp pricks after the anti-theft ring is broken (namely the bridging frame is broken), and the safety of the packaging container in the opening process is improved. In addition, the metal packaging container is provided with an inner sealing ring and an outer sealing ring at the container mouth matching part at the periphery of the sealing gasket, a sealing groove for being sleeved in the container mouth is formed between the two sealing rings, so that after the container mouth enters the sealing groove, the inner side surface of the outer sealing ring clings to the outer wall of the container mouth to form outer sealing, the outer side surface of the inner sealing ring clings to the inner wall of the container mouth to form inner sealing, and the groove bottom of the sealing groove clings to the upper edge of the container mouth to form upper sealing (see figure 8, the overlapping part in the figure is a compression part of the sealing gasket during actual matching), so that the container is well. The top surface of the sealing gasket above the sealing groove is provided with a material containing groove which is arranged on the contact surface of the sealing gasket and the cover body, when the cover is turned to cover the container opening, downward pressure F1 is generated when the cover is covered, and reaction force F2 (shown in figure 9) generated by interference of the sealing gasket is generated, and part of the reaction force can be absorbed by the material containing groove in a deformed way, so that the reaction force can not be completely acted on the container, thereby greatly lightening the bearing pressure of the container, and greatly reducing the problems of container collapse, container anti-theft ring neck deformation and the like caused in the process of covering the packaging container. Meanwhile, the interference ring is convexly arranged at the lower part of the outer side surface of the inner sealing ring, the interference ring is of an annular belt structure protruding on the outer side surface of the inner sealing ring, the interference ring can play a role of strengthening sealing when the outer side surface of the inner sealing ring is tightly attached to the inner wall of the container opening, because the distance between the interference ring and the bottom of the sealing groove is larger than the axial moving distance of the cover top when the anti-theft ring is opened by twisting the cover and broken, namely, in the initial stage of the rotation opening of the twisting cover, when the twisting cover moves a certain distance in the axial direction but the anti-theft ring is not broken, the interference ring is always tightly attached to the inner wall of the container opening (see fig. 7, the state shown in fig. 7 is the leakage critical state of the container), the sealing between the inner sealing ring and the inner wall of the container opening before the anti-theft.
In addition to the above embodiments, the technical features or technical data of the present invention may be reselected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and are within the protection scope of the present invention.
Claims (10)
1. The utility model provides a safe metal packaging container who easily opens, includes container body (25) and twists the lid, the last shaping of packaging container has cylindric container mouth (26), and the shaping has the external screw thread on the outer wall of container mouth, its characterized in that, it includes caping (1) and the lid wall (2) that constitutes by the outer fringe downwardly extending of this caping to twist the lid, the lower surface of caping is equipped with sealed the pad (3), the shaping has on the lid wall with the internal thread of external screw thread adaptation, the lower part of lid wall is equipped with two bulge loops (4) that are parallel to each other and encircle the lid wall, constitutes annular groove (5) between two bulge loops, and the tank bottom department of annular groove is equipped with a plurality of long banding incision (6) along lid wall circumference, the incision run through the lid wall, the lid wall of incision below constitutes theftproof ring (7), and the lid wall between the adjacent incision constitutes bridging (8), the theftproof ring is connected with the lid wall of incision top through the, the bridge is an obliquely arranged equal-width structure, and one end of the bridge, which is close to the cover top, is used as a reference, and the end of the bridge, which is connected with the anti-theft ring, deviates to the right side; an upper acute angle (9) is formed between the right side of the upper end of the bridge and the cut on the right side of the bridge, and a lower acute angle (11) is formed between the left side of the lower end of the bridge and the cut on the left side of the bridge.
2. A secure and easy-open metal packaging container according to claim 1, wherein the angle between the centre line of said bridge and the horizontal plane is 45 to 75 degrees; the bridge is provided with an upper pre-splitting opening (10) at the connecting part of the upper acute angle, the upper pre-splitting opening extends along the circumferential direction of the cover wall, the opening of the upper pre-splitting opening is communicated with the notch, and the length of the upper pre-splitting opening in the circumferential direction of the cover wall is 10-20% of the width of the bridge.
3. A security and easy-open metal packaging container according to claim 2, characterized in that the bridge bridges in connection with the lower acute angle are formed with a lower pre-breach (12) extending in circumferential direction of the lid wall and having its opening communicating with the cut, the length of the lower pre-breach in circumferential direction of the lid wall being 50-70% of the length of the upper pre-breach.
4. The metal packaging container of claim 1, wherein an inner sealing ring (14) for abutting against the inner wall of the container opening edge portion (13) and an outer sealing ring (15) for abutting against the outer wall of the container opening edge portion are integrally extended downward from the outer peripheral portion of the sealing gasket, and a sealing groove (16) with a downward opening is formed between the inner sealing ring and the outer sealing ring.
5. The metal packaging container of claim 4, wherein the container body is integrally formed by a single layer of metal material, the mouth edge portion of the container mouth is formed by four layers of metal material by rolling, the top of the mouth edge portion is in a circular arc shape, and the bottom of the sealing groove is matched with the top of the mouth edge portion in shape.
6. The safe and easy-to-open metal packaging container according to claim 4, wherein a material containing groove (17) is arranged on the top surface of the sealing gasket corresponding to the upper part and the lower part of the sealing groove, the bottom surface of the material containing groove is arc-shaped, the center line of the cross section of the material containing groove coincides with the center line of the cross section of the sealing groove, the opening width of the material containing groove is 50% to 70% of the width of the sealing groove, and the depth of the material containing groove is 30% to 60% of the opening width of the material containing groove; when the safe and easily-opened metal packaging container is used for sealing the container opening, the inner side surface of the outer sealing ring is tightly attached to the outer wall of the opening edge part of the container, the outer side surface of the inner sealing ring is tightly attached to the inner wall of the opening edge part of the container, the groove bottom of the sealing groove is tightly attached to the top surface of the opening edge part of the container, the cross-sectional area of the material containing groove is reduced, and the groove bottom of the material containing groove.
7. The safe and easy-to-open metal packing container of claim 4, wherein the height of the cross section of the inner sealing ring is greater than that of the cross section of the outer sealing ring, an interference ring (18) is convexly arranged at the lower part of the outer side surface of the inner sealing ring, and the distance between the interference ring and the bottom of the sealing groove is greater than the axial moving distance of the cap top when the twist-off cap opening bridge is broken; the lower extreme of the lateral surface of interior sealing ring is equipped with direction arc limit (19), the last edge on direction arc limit is connected with the lower limb of interference ring.
8. A safe and easy-to-open metal packing container according to claim 1, wherein the lid wall near the lid top is formed with an annular tapered wall (20) with a small top and a large bottom, the upper section of the tapered wall clings to the outer sealing ring to form an outer sealing ring squeezing part (21), when the lid is unscrewed to close the container mouth, the pressure of the outer sealing ring on the outer wall of the rim part of the container mouth is greater than that of the inner sealing ring on the inner wall of the rim part of the container mouth, and the apex angle of the tapered wall is 20 to 40 degrees.
9. A safe and easy-to-open metal packing container according to claim 8, characterized in that the inner side of the inner sealing ring is in transitional connection with the lower surface of the sealing gasket via a compression-resistant arc surface (22) having a radius which is 0.7 to 1.3 times the height of the cross-section of the inner sealing ring.
10. A safe and easy-to-open metal packing container according to claim 9, wherein a decompression groove (23) is provided on the bottom of the sealing groove at a side close to the inner sealing ring, extending along the sealing groove, and has an opening width of 10% to 25% of the bottom width of the sealing groove and a depth of 15% to 30% of the bottom width of the sealing groove; the center line of the cross section of the pressure reducing groove is parallel to the center line of the cross section of the sealing groove, the inner side groove wall of the pressure reducing groove and the inner side groove wall at the groove bottom of the sealing groove are on the same cylindrical surface, and the groove bottom of the pressure reducing groove is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811088835.1A CN110902128A (en) | 2018-09-18 | 2018-09-18 | Safe easy-to-open metal packaging container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811088835.1A CN110902128A (en) | 2018-09-18 | 2018-09-18 | Safe easy-to-open metal packaging container |
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| Publication Number | Publication Date |
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| CN110902128A true CN110902128A (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811088835.1A Pending CN110902128A (en) | 2018-09-18 | 2018-09-18 | Safe easy-to-open metal packaging container |
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| CN (1) | CN110902128A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115771671A (en) * | 2022-12-05 | 2023-03-10 | 广州雅塑包装技术服务有限公司 | Conjoined cover, conjoined cover ring cutting equipment and process thereof |
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Application publication date: 20200324 |