CN111232373A - Easy-open end with novel opening and design method thereof - Google Patents
Easy-open end with novel opening and design method thereof Download PDFInfo
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- CN111232373A CN111232373A CN201910872235.2A CN201910872235A CN111232373A CN 111232373 A CN111232373 A CN 111232373A CN 201910872235 A CN201910872235 A CN 201910872235A CN 111232373 A CN111232373 A CN 111232373A
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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
- B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
- B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
- B65D17/34—Arrangement or construction of pull or lift tabs
- B65D17/347—Arrangement or construction of pull or lift tabs characterised by the connection between the tab and a detachable member or portion of the container
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- Mechanical Engineering (AREA)
- Containers Opened By Tearing Frangible Portions (AREA)
- Closures For Containers (AREA)
Abstract
The invention discloses a novel open easy-open end and a design method thereof, the easy-open end comprises a cover body and a pull ring, the cover body is provided with a notch groove surrounding the center of the cover body, the notch groove is an annular structure formed by connecting a plurality of groove sections, the notch groove comprises a main section and an opening section close to an olecranon, the opening section is in an arc shape, the circle center of the opening section is positioned on the central axis of a rivet, two ends of the opening section are both connected with extension sections, the other end of the extension section is connected with the main section, and when the pull ring rotates around the central axis of the rivet within a certain angle range, the olecranon the pull ring is always positioned above the opening section of the notch groove. The problem that the opening of the easy-open end is difficult or difficult due to the fact that the relative position of the eagle-beak tip and the notch of the pull ring is changed due to the fact that the pull ring of the easy-open end in the prior art is easy to loosen and deflect is effectively solved, and the easy-open end has high practical value.
Description
Technical Field
The invention relates to the technical field of easy-open ends of packaging containers, in particular to an easy-open end with a novel opening and a design method thereof.
Background
In the metal packaging industry, canned food packaging and a large number of easy-open-end packages are used, so that the eating of canned food is greatly facilitated, but the ring is frequently broken, the eagle beak tip of the pull ring is bent and cannot puncture a notch groove to cause the bad opening condition, and the pull ring is askew in production, transportation and storage, so that the opening defect is more after the pull ring rotates. In particular to a full-open type easy-open end, the opening process is to lift the pull ring, the hawk beak tip of the pull ring punctures the notch groove by taking the rivet as a fulcrum, the pull ring is overturned to open the opening to a certain width, and then the pull ring is pulled back to be opened along the notch groove completely. Whether the eagle mouth tip of the pull ring can puncture the notch groove or not is the first step for realizing the opening of the easy-open end, but in the opening of the current product, the eagle mouth tip is basically a round opening (see figure 11) and also has an opening formed by combining a straight line and a circular arc (see figure 12), the eagle mouth tip on the pull ring is only closest to one point of the intersection point of the central line of the easy-open end cover body and the notch groove, and the distance between the eagle mouth tip and the notch groove changes (namely, the eagle mouth tip is far away from the notch groove, see figure 13) no matter the eagle mouth tip deviates leftwards and rightwards, so that the opening parameter of the easy-open end is changed, and in the production process, the tightness of rivet riveting, the parallelism of a rivet plane and the like are changed, so that the pull ring is not riveted tightly, at this time, after each production link and product transportation link, the pull ring is easy to deflect, or the production and storage and transportation touch the deviation, that is, the olecranon tip is far away from the notch and pricks towards the plane of the cover body without notch, so that the olecranon tip can not pierce the notch when the easy-open cover is opened, and the easy-open cover can not be opened or is difficult to open.
Disclosure of Invention
The invention aims to solve the problem that the relative position of a eagle mouth tip and a notch of a pull ring is changed to cause that the easy-open end cannot be opened or is difficult to open due to the fact that the pull ring of the easy-open end in the prior art is easy to loosen and deflect, and provides a novel opening type easy-open end capable of ensuring opening even if the pull ring is loosened and deflected for a certain angle and a design method thereof.
The invention adopts a specific scheme to solve the technical problems that the novel opening easy-open end comprises a cover body and a pull ring riveted on one side of the cover body through a rivet, the pull ring comprises a handle positioned on one side of the rivet and an olecranon positioned on the other side of the rivet, the cover body is provided with a notch groove surrounding the center of the cover body, the notch groove is an annular (closed) structure formed by connecting a plurality of groove sections and comprises a main section and an opening section close to the olecranon, the opening section is in a circular arc shape, the circle center of the opening section is positioned on the central axis of the rivet, two ends of the opening section are connected with extension sections, the other end of each extension section is connected with the main section, and when the pull ring rotates around the central axis of the rivet within a certain angle range, the tip of the olecranon the pull ring is always positioned above the opening section of the notch groove. The notch is an easy-to-open groove which utilizes the eagle beak tip on the pull ring to downwards puncture the cover body when the easy-to-open cover is opened, the cover body below the eagle beak tip is firstly cracked when the easy-to-open cover is opened, the notch is the first step of opening the easy-to-open cover, and if the eagle beak tip cannot puncture the cover body downwards or the cover body is difficult to puncture, poor opening of the easy-to-open cover is directly caused. The invention arranges an opening section with a notch groove near the olecranon of the pull ring, the opening section is arranged into an arc shape taking the center of a rivet as the center of a circle, and two ends of the opening section are connected with a notch groove main section with a conventional structure through extension sections. Therefore, even if the pull ring deflects a certain angle leftwards or rightwards, the relative position of the olecranon tip and the notch can still be kept unchanged as the olecranon tip on the pull ring is always positioned above the opening section of the notch, and the pull ring can still be reliably opened when deflected by a certain angle, so that the opening reliability and stability are improved; the problem of among the prior art easy-open end pull ring because of not hard up, collision appear deflecting to cause the relative position of pull ring olecranon point and cutting groove to change (promptly the olecranon point is kept away from the cutting groove and is stabbed to the lid plane that does not have the cutting groove), lead to the easy-open end to appear unable opening or open badly is solved. The design method of the invention is suitable for the design of the opening of the easy-open end with various structures such as a circular cover, an elliptical cover, a rectangular cover, a horseshoe-shaped cover and the like.
Preferably, the extension section is a straight line section and is arranged in the tangential direction of the two ends of the opening section, the tail end of the extension section is connected with the main section through a transition section, the transition section is in a circular arc shape, the extension section is tangent to one end of the transition section, and the other end of the transition section is smoothly connected with the main section. A linear extending section is adopted, and the extending section is tangent to the two ends of the opening section, so that the crack is favorable for rapidly extending to the two sides after the opening section is torn when the opening section is opened; the end of the extension section is connected with the main section through the circular arc transition section, so that the split after the opening section is torn can be smoothly guided to the notch arranged according to the traditional technology.
Preferably, the central angle corresponding to the two ends of the opening section is 8-24 degrees, and the included angle between the extending section and the symmetrical central plane of the cover body is 78-86 degrees. The central angle that opening section both ends correspond is 8 to 24, and the rotation angle that the pull ring encircleed the rivet center is ± 4 to ± 12 promptly, and this angle is big more, and the angle of admitting pull ring deflection also correspondingly increases, in fact owing to receive the restriction of easy-open end capping structure, the deflection angle that the pull ring probably appears is usually not big, and in addition, too big deflection angle can influence the opening size of easy-open end, therefore opening section both ends correspond the central angle be 8 to 24 degrees can compromise the deflection angle that the pull ring probably appears and not reduce the requirement in two aspects of the opening area of easy-open end too much well.
Preferably, the cover body is of a symmetrical structure, the central axis of the rivet is located on the symmetrical central plane of the cover body, and the notch is symmetrical relative to the symmetrical central plane of the cover body.
Preferably, the opening section of the notch and the main section of the notch are equal-depth grooves, the notch depth of the opening section is greater than that of the main section, the notch bottom of the extension section is of an inclined structure, the notch depth of the extension section close to one end of the opening section is the same as that of the opening section, and the notch depth of the extension section close to one end of the main section is the same as that of the main section. The depth of the notch groove of the opening section is the same, and the force for pulling the handle of the pull ring to pierce the notch groove is basically the same within the range of the preset maximum deflection angle of the pull ring, so that the hand feeling experience effect of opening the easy-open cover is enhanced. The opening section has shorter length relative to the whole notch, so that the notch depth of the opening section is greater than that of the main section, and the opening section is relatively easy to open and has little influence on the overall strength of the easy-to-open cover; the bottom of the notch groove of the extension section is of an inclined structure (namely, the bottom of the groove at one end of the extension section is smoothly connected with the bottom of the opening section, and the bottom of the groove at the other end of the extension section is smoothly connected with the bottom of the main section), so that when the notch groove is opened, the crack can smoothly extend to the main section of the notch groove towards two sides after the opening section is torn.
Preferably, the opening section of the notch groove and the main section of the notch groove are equal-depth grooves, the notch groove depth of the opening section is greater than that of the main section, the groove bottoms of the extension section and the transition section are of continuous inclined structures, the notch groove depth of one end of the extension section, which is close to the opening section, is the same as that of the opening section, and the notch groove depth of one end of the transition section, which is close to the main section, is the same as that of the main section. For the scheme that the transition section is arranged between the extension section and the main section of the notch groove, the groove bottoms of the extension section and the transition section adopt an inclined transition structure (namely, the groove bottom of one end of the extension section, which is close to the opening section, is smoothly connected with the groove bottom of the opening section, the groove bottom of one end of the transition section, which is close to the main section, is smoothly connected with the groove bottom of the main section, and the connection part of the extension section and the transition section adopts a continuous inclined plane structure), so that the crack is favorably smoothly extended to the main section of the notch groove from the extension section and the transition section to two sides through the extension section and the transition section after.
Preferably, the cross section of the notch is a trapezoid with a wide upper part and a narrow lower part, the depth of the main section of the notch is 50% -70% of the thickness of the cover body of the easy-open cover, and the depth of the opening section of the notch is 1.05-1.25 times of the depth of the main section.
Preferably, the cover body on the back of the notch groove is provided with a pressing groove opposite to the notch groove, the cross section of the pressing groove is arc-shaped, the opening width of the pressing groove is 1.5-2.5 times of that of the notch groove main section, and the depth of the pressing groove is 15-25% of that of the notch groove main section. The cover body on the back of the notch groove is provided with the pressing groove opposite to the notch groove, so that the notch groove can be favorably torn when the easy-open cover is opened.
A design method of a novel open easy-open end comprises the following steps:
a. designing a section of opening section on the notch of the easy-open end close to the pull ring olecranon, wherein the opening section is in a circular arc shape, and the circle center of the circular arc shape is positioned on the central axis of the easy-open end pull ring rivet;
b. designing extension sections at two ends of the opening section, wherein the extension sections are straight line sections and are designed in the tangential directions of the two ends of the opening section;
c. and designing a transition section at one end of the extension section, which is far away from the opening section, wherein the transition section is in a circular arc shape, and the extension section is connected with the main section of the notch groove through the transition section.
Preferably, the design method of the novel opening easy-open end further comprises the following steps:
d. designing the opening section of the notch groove and the main section of the notch groove into different depths, and designing the depth of the opening section into 1.05-1.25 times of the depth of the main section;
e. the groove bottoms of the extension section and the transition section are set to be of smooth inclined structures, the depth of the notch groove at one end of the extension section close to the opening section is the same as that of the notch groove at the opening section, and the depth of the notch groove at one end of the transition section close to the main section is the same as that of the main section.
The invention has the advantages of effectively solving the problem that the relative position of the olecranon tip and the notch of the pull ring is changed to cause the difficulty in opening or opening the easy-open cover due to the easy looseness and deflection of the pull ring of the easy-open cover in the prior art.
Drawings
FIG. 1 is a schematic view of one construction of the easy open end of the present invention;
FIG. 2 is a cross-sectional view of the easy open end of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1;
FIG. 4 is a schematic view of a partial structure of the score of the easy open end;
FIG. 5 is an enlarged view of a portion of FIG. 2;
FIG. 6 is an enlarged partial view of FIG. 5;
FIG. 7 is a schematic view of a configuration of the present invention in deflection of an easy open end tab;
FIG. 8 is an enlarged partial view of FIG. 7;
FIG. 9 is a schematic view of an alternative construction of the easy open end tab of the present invention when deflected;
FIG. 10 is an enlarged partial view of FIG. 9;
FIG. 11 is a schematic view of a prior art easy open end construction;
FIG. 12 is another schematic view of the structure of the easy open end of the prior art;
FIG. 13 is a partial schematic view of a prior art easy open end with tab deflection.
In the figure: 1. the cover body comprises a cover body, 2. rivets, 3. pull rings, 4. handles, 5. olecranon, 6. notches, 7. main section, 8. opening section, 9. extension section, 10. olecranon tip, 11. transition section, 12. symmetrical center plane of the cover body, 13. indent and K. central axis of the rivet.
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, the novel opening easy-open end comprises a cover body 1 and a pull ring 3 riveted on one side of the cover body through a rivet 2, the cover body is of a symmetrical structure, the central axis of the rivet is positioned on a symmetrical central plane 12 of the cover body, the notch is symmetrical relative to the symmetrical central plane of the cover body, the pull ring comprises a handle 4 positioned on one side of the rivet and an olecranon 5 positioned on the other side of the rivet, a notch 6 surrounding the center of the cover body is arranged on the cover body, the cross section of the notch is trapezoidal with a wide upper part and a narrow lower part, the notch is of an annular closed structure formed by connecting 4 groove sections and comprises a main section 7 and an opening section 8 (shown in fig. 3) close to the olecranon, the opening section is of a circular arc shape, the center of the opening section is positioned on the central axis of the rivet, two ends of the opening section are connected with an extension section 9 (shown by a dotted line in fig. 3), the extension section is a straight line section and is arranged in the tangential direction of two ends of the opening section, the eagle section is smoothly connected with the main section, and the opening section is positioned above the central axis K of the rivet α and is positioned above the opening tip (shown in the maximum.
The notch groove of the embodiment is composed of 4 groove sections, the depth of the notch groove of 4 sections is the same, the depth is 65% of the thickness of the easy-open cover body, the central angle 2 α corresponding to the two ends of the opening section is 20 degrees (namely the one-way maximum deflection angle α of the pull ring is 10 degrees), and the included angle β between the extending section and the symmetrical central plane of the cover body is 80 degrees.
Example 2
The notch of embodiment 2 is an annular closed structure formed by connecting 6 groove sections, the depth of the 6-section notch is the same, the depth is 60% of the thickness of the cover body of the easy-open cover, the notch comprises a main section and an opening section close to the olecranon, the opening section is in a circular arc shape, the circle center of the opening section is located on the central axis of the rivet, the two ends of the opening section are both connected with an extension section, the extension sections are straight sections and are arranged in the tangential direction of the two ends of the opening section, the tail end of the extension section is connected with the main section through a transition section 11 (shown by a chain line in fig. 4), the transition section is in a circular arc shape, the extension section is tangent to one end of the transition section, the other end of the transition section is smoothly connected with the main section (see fig. 4), and the rest.
Example 3
The notch depth of the opening section is equal to and greater than the notch depth of the main section in embodiment 3, the notch groove bottom of the extension section is of an inclined structure, the notch depth of the extension section near one end of the opening section is the same as the notch depth of the opening section, and the notch depth of the extension section near one end of the main section is the same as the notch depth of the main section. The depth of the main section of the notch groove is 55% of the thickness of the easy-open cover body, the depth of the opening section of the notch groove is 1.1 times of the depth of the main section, and the rest is the same as that of the embodiment 1.
Example 4
The opening section of the notch groove and the main section of the notch groove in embodiment 4 are equal-depth grooves, the notch groove depth of the opening section is greater than that of the main section, the notch groove bottoms of the extension section and the transition section are of continuous inclined structures, the notch groove depth of one end of the extension section, which is close to the opening section, is the same as that of the opening section, and the notch groove depth of one end of the transition section, which is close to the main section, is the same as that of the main section. The depth of the main section of the notch groove is 50% of the thickness of the easy-open cover body, the depth of the opening section of the notch groove is 1.2 times of the depth of the main section, and the rest is the same as that of the embodiment 2.
Example 5
In example 5, the cover body on the back of the notch groove is provided with a pressing groove 13 (see fig. 6) opposite to the notch groove, the cross section of the pressing groove is arc-shaped, the opening width of the pressing groove is 2 times of the opening width of the main section of the notch groove, the depth of the pressing groove is 20% of the depth of the main section of the notch groove, and the rest is the same as that of example 1 or example 2 or example 3 or example 4.
A design method of a novel open easy-open end comprises the following steps:
a. designing a section of opening section on the notch of the easy-open end close to the pull ring olecranon, wherein the opening section is in a circular arc shape, and the circle center of the circular arc shape is positioned on the central axis of the easy-open end pull ring rivet;
b. designing extension sections at two ends of the opening section, wherein the extension sections are straight line sections and are designed in the tangential directions of the two ends of the opening section;
c. designing a transition section at one end of the extension section far away from the opening section, wherein the transition section is in a circular arc shape, and the extension section is connected with the main section of the notch groove through the transition section;
d. designing the opening section of the notch groove and the main section of the notch groove into different depths, and designing the depth of the opening section into 1.05-1.25 times of the depth of the main section;
e. the groove bottoms of the extension section and the transition section are set to be of smooth inclined structures, the depth of the notch groove at one end of the extension section close to the opening section is the same as that of the notch groove at the opening section, and the depth of the notch groove at one end of the transition section close to the main section is the same as that of the main section.
The invention arranges an opening section with a notch groove near the olecranon of the pull ring, the opening section is arranged into an arc shape taking the center of a rivet as the center of a circle, and two ends of the opening section are connected with a notch groove main section with a conventional structure through extension sections. Therefore, even if the pull ring deflects to a certain angle leftwards (see fig. 7 and 8) or rightwards (see fig. 9 and 10), the relative position of the olecranon tip and the notch can still be kept unchanged as the olecranon tip on the pull ring is always positioned above the opening section of the notch, and the pull ring can still be reliably opened after being deflected to a certain angle after being loosened, so that the opening reliability and stability are improved; the problem of among the prior art easy-open end pull ring easily not hard up and appear deflecting to cause pull ring olecranon point and the relative position of cutting groove to change, lead to the easy-open end to appear unable opening or open badly is solved.
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. An easy-open end with a novel opening comprises a cover body (1) and a pull ring (3) riveted on one side of the cover body through a rivet (2), it is characterized in that the pull ring comprises a handle (4) positioned at one side of the rivet and an olecranon (5) positioned at the other side of the rivet, the cover body is provided with a notch (6) surrounding the center of the cover body, the notch is an annular structure formed by connecting a plurality of groove sections and comprises a main section (7) and an opening section (8) close to the olecranon, the opening section is arc-shaped, the circle center of the opening section is positioned on the central axis of the rivet, both ends of the opening section are connected with the extension sections (9), the other end of the extension section is connected with the main section, and when the pull ring rotates around the central axis (K) of the rivet within a certain angle range, the olecranon tip (10) of the olecranon on the pull ring is always positioned above the notched opening section.
2. A novel open easy-open end as claimed in claim 1, wherein said extension section is a straight line section, and is arranged in the tangential direction of the two ends of the opening section, the end of the extension section is connected with the main section through a transition section (11), said transition section is arc-shaped, and the extension section is tangent to one end of the transition section, and the other end of the transition section is smoothly connected with the main section.
3. An easy open end as claimed in claim 1, wherein the central angle of the opening section at both ends is 8 ° to 24 °, and the angle between the extension section and the central plane of symmetry of the lid is 78 ° to 86 °.
4. A novel open easy open end as claimed in claim 1, wherein said lid is of a symmetrical structure, the central axis of said rivet is located on the central plane of symmetry (12) of the lid, and said score groove is symmetrical with respect to the central plane of symmetry of the lid.
5. The easy open end of claim 1 wherein the opening section and the main section of the notch are equal depth notches, the notch depth of the opening section is greater than that of the main section, the notch bottom of the extension section is of an inclined structure, the notch depth of the extension section near the opening section is the same as that of the opening section, and the notch depth of the extension section near the main section is the same as that of the main section.
6. The easy open end of claim 2 wherein the opening section and the main section of the notch are equal depth notches, the notch depth of the opening section is greater than that of the main section, the bottom of the notch groove of the extension section and the transition section is a continuous inclined structure, the notch depth of the extension section near the opening section is the same as that of the opening section, and the notch depth of the transition section near the main section is the same as that of the main section.
7. The easy open end of the new type opening of claim 1-6, wherein the cross section of the notch is trapezoid with wide top and narrow bottom, the depth of the main section of the notch is 50% to 70% of the thickness of the cover of the easy open end, and the depth of the opening section of the notch is 1.05 to 1.25 times of the depth of the main section.
8. A novel open easy-open end according to claim 7 wherein the cover body on the back of the notch is provided with a indent (13) opposite to the notch, the cross section of the indent is arc-shaped, the width of the indent is 1.5-2.5 times of the width of the notch main section, and the depth of the indent is 15-25% of the depth of the notch main section.
9. A method for designing a novel open easy open end of claim 1, comprising the steps of:
a. designing a section of opening section on the notch of the easy-open end close to the pull ring olecranon, wherein the opening section is in a circular arc shape, and the circle center of the circular arc shape is positioned on the central axis of the easy-open end pull ring rivet;
b. designing extension sections at two ends of the opening section, wherein the extension sections are straight line sections and are designed in the tangential directions of the two ends of the opening section;
c. and designing a transition section at one end of the extension section, which is far away from the opening section, wherein the transition section is in a circular arc shape, and the extension section is connected with the main section of the notch groove through the transition section.
10. The method of designing a novel open easy open end of claim 9 further comprising the steps of:
d. designing the opening section of the notch groove and the main section of the notch groove into different depths, and designing the depth of the opening section into 1.05-1.25 times of the depth of the main section;
e. the groove bottoms of the extension section and the transition section are set to be of smooth inclined structures, the depth of the notch groove at one end of the extension section close to the opening section is the same as that of the notch groove at the opening section, and the depth of the notch groove at one end of the transition section close to the main section is the same as that of the main section.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910872235.2A CN111232373A (en) | 2019-09-16 | 2019-09-16 | Easy-open end with novel opening and design method thereof |
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| CN201910872235.2A CN111232373A (en) | 2019-09-16 | 2019-09-16 | Easy-open end with novel opening and design method thereof |
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| US20140263332A1 (en) * | 2013-03-15 | 2014-09-18 | Ball Corporation | End closure with double anti-missile score |
| CN203473406U (en) * | 2013-07-22 | 2014-03-12 | 义乌市易开盖实业公司 | Horseshoe-shaped easily-opened packaging cover |
| CN203612323U (en) * | 2013-08-15 | 2014-05-28 | 苏州斯莱克精密设备股份有限公司 | Environment friendly and clean rewarding easy-pull top |
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