CN111216998A - Easy-open lid capable of preventing lid edge from being scratched and method thereof - Google Patents
Easy-open lid capable of preventing lid edge from being scratched and method thereof Download PDFInfo
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- CN111216998A CN111216998A CN201910871437.5A CN201910871437A CN111216998A CN 111216998 A CN111216998 A CN 111216998A CN 201910871437 A CN201910871437 A CN 201910871437A CN 111216998 A CN111216998 A CN 111216998A
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- Prior art keywords
- easy
- open end
- open
- pull ring
- lid
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims description 42
- 238000001179 sorption measurement Methods 0.000 claims description 20
- 238000011144 upstream manufacturing Methods 0.000 claims description 11
- 210000002221 olecranon process Anatomy 0.000 claims description 4
- 238000012858 packaging process Methods 0.000 claims description 3
- GQWNECFJGBQMBO-UHFFFAOYSA-N Molindone hydrochloride Chemical compound Cl.O=C1C=2C(CC)=C(C)NC=2CCC1CN1CCOCC1 GQWNECFJGBQMBO-UHFFFAOYSA-N 0.000 claims 1
- 230000001174 ascending effect Effects 0.000 claims 1
- 230000003449 preventive effect Effects 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 12
- 238000000576 coating method Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000006748 scratching Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 210000003323 beak Anatomy 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 235000013324 preserved food Nutrition 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
Images
Classifications
-
- 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
Abstract
The invention discloses an easy-open end capable of preventing an end edge from being scratched and a method thereof, wherein the easy-open end comprises an end body and a pull ring arranged on one side of the end body, a convex hull protruding upwards is integrally formed on the end body on one side of the easy-open end, the top surface of the convex hull and the upper plane of the pull ring are on the same horizontal plane, when the easy-open end is placed in an overlapping mode, in two adjacent easy-open ends, the top surface of the convex hull of the lower easy-open end and the upper plane of the pull ring form a supporting plane of the upper easy-open end, and a gap is formed between an end edge cut of the easy-open end and an end edge surface of the easy. The easy-open cover and the method for preventing the cover edge from being scratched can effectively solve the problem that the cover edge coating is scratched by the cover edge notch, ensure the product quality and have 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 capable of preventing the edge of the end from being scratched and a method thereof.
Background
In the metal packaging container industry, can packages such as canned food, beverage and the like are packaged by a large number of easy-open lids, and for the purpose of food safety and long-term storage, the surfaces of the easy-open lids are coated with coating films to isolate food, beverage, air, corrosive substances and metal, avoid perforation caused by metal corrosion, destroy the commercial sterile environment of cans, deteriorate contents and cause food safety problems. Referring to fig. 11 and 12, an easy-open lid 25 of the prior art is composed of two parts, namely a lid 1 and a tab 2; due to the structure, in the production and transportation process of the easy-open end, the easy-open end jacks up the cover body due to the thickness of the pull ring when being stacked together, one end without the pull ring is inclined due to the cover body (see figure 13), in the upper and lower adjacent easy-open ends, the cover edge notch 8 of the upper easy-open end is arranged on the cover edge surface 9 of the lower easy-open end like a knife edge, when the upper and lower easy-open ends generate relative motion due to transportation vibration and the like, the cover edge notch of the upper easy-open end can scrape (scrape) the coating on the surface of the cover edge surface of the lower easy-open end, so that the metal surface of the cover body loses a protective layer, the corrosion is caused, the product quality is seriously influenced, and the quality guarantee period of. How to prevent the film on the surface of the cover body from being scratched in the production process and the transportation process of the easy-open cover, in particular to an anti-scratching technology for the surface of the easy-open cover of tinplate, is one of the problems which are researched and solved for many years in the metal packaging industry and are not well solved so far. In addition, the problem of pull ring can cause the stacking and inclination of the cover body besides the scratching problem, and the problems of cover separation and cover clamping in the production process, unsmooth lower cover, more faults, package inclination and the like are caused. When the pull rings of the upper and lower easy-open lids are in the same direction (see fig. 13), one end of the pull ring is arranged, and the cut of the lid edge and the lid edge surface can not be scratched due to contact; however, at the end without the pull ring, the cut of the cap edge is contacted with the cap edge surface due to the lack of support of the upper cap body, and the contact area is very small, so that the cap edge is easy to scratch, and the easy-open cap is formed into a fan shape when being overlapped, the split cap is not easy to be separated during packaging and production, and the cap is easy to be clamped to cause faults. Even if the tabs of the easy open ends are arranged upside down (in reverse direction) (see fig. 14), although the easy open ends are stacked flush and the problems of packaging and lid separation are solved, the lid edge notch of the end without the tab is still in contact with the lid edge face, and thus the scratch problem cannot be solved. Even if the pull rings of the easy-open end are arranged in an inverted and alternate mode in advance, the situation that the pull rings are at the same end can occur through the production of the subsequent process and the rejection of defective products, and the situation occurs randomly and cannot be controlled, so that the problem of damage of the coating film of the easy-open end is caused, and the complaint of users often occurs.
Disclosure of Invention
The invention aims to solve the problems that the coating film on the edge surface of the easy-open end is easily scratched by the cut of the edge of the easy-open end in the production and transportation processes and the quality guarantee period of products are seriously influenced in the prior art, and provides the easy-open end capable of preventing the edge of the easy-open end from being scratched and a method thereof.
The invention adopts a specific scheme for solving the technical problems that the easy-open end capable of preventing the cover edge from being scratched comprises a cover body and a pull ring arranged on one side of the cover body, a hawk beak on the pull ring points to the outer edge of the easy-open end, and the easy-open end is of a symmetrical structure relative to the center line of the pull ring. Because the pull rings of the easy-open end are all arranged at the position close to the edge of one side of the easy-open end, an upward convex hull is integrally formed on the cover body at the side of the easy-open end far away from the pull ring, and the top surface of the convex hull (namely the highest point or the highest plane at the top of the convex hull) and the upper plane of the pull ring (namely the plane formed by the high points of the pull ring on the structure) are on the same horizontal plane; therefore, the easy-open end forms a plurality of supporting points or supporting surfaces on the equal-height surface where the upper plane of the pull ring is located, when the easy-open end is placed in an overlapping mode, as long as the upper easy-open end and the lower easy-open end are properly staggered (namely the convex hull positions of the upper easy-open end and the lower easy-open end are staggered), the supporting points provided by the lower easy-open end can enable the upper easy-open end to be in a horizontal state without inclination, so that the situation that the edge surface coating film of the lower easy-open end is scratched by the edge notch of the upper easy-open end is avoided, and the product quality is ensured. The structure is suitable for various easy-open lids such as round lids, rectangular lids, oval lids and the like. For the round cover, the supporting requirement for preventing scratching can be met only by properly staggering the upper easy-open cover and the lower easy-open cover when the round cover is stacked; for square covers in rectangular covers, the upper and lower easy-open covers can be placed at 90 degrees or 180 degrees in a staggered manner (namely, pull rings are placed in opposite directions) when being stacked; and for other rectangular covers or oval covers and the like, the upper easy-open cover and the lower easy-open cover can be placed in a staggered mode by 180 degrees when the two easy-open covers are stacked.
Preferably, the easy-open end is a non-circular rectangular cap or an elliptical cap, the center line of the pull ring is on the major axis of the easy-open end, the pull ring is arranged at one end of the easy-open end in the length direction, and the convex hull is arranged at the other end of the easy-open end in the length direction; the two convex hulls are symmetrically arranged on two sides of the long axis of the easy-open end, and the distance between the two convex hulls is larger than the maximum width of the pull ring. To non-circular rectangular shape lid or oval-shaped lid, with the convex closure setting in the one end that easy-open end length direction kept away from the pull ring, and respectively set up a convex closure in the both sides of easy-open end major axis, can form three point support structure together with the pull ring like this, when two easy-open ends can misplace 180 degrees and place about guaranteeing, the easy-open end that is located the top is in the horizontality. And the distance between the two convex hulls is larger than the maximum width of the pull ring, so that the stability of support can be ensured, and the situation that the edge cut of the upper easy-open cover scratches the film on the surface of the edge face of the lower easy-open cover due to the fact that the easy-open cover rotates around the long shaft is avoided.
As preferred, integrated into one piece is fluted on easy-open end's the lid, the recess include at least that one sets up the protruding closure limit groove and two of protruding closure one side and set up the pull ring limit groove in the pull ring both sides respectively on easy-open end lid, the degree of depth in protruding closure limit groove is the same with the degree of depth in pull ring limit groove, when easy-open end reverse overlapping is placed, in two adjacent easy-open ends from top to bottom, the bottom surface of the protruding closure limit groove of top easy-open end and the last plane butt of below easy-open end pull ring, the bottom surface of the pull ring limit groove of top easy-open end and the top surface butt of below easy-open end protruding closure. The bottom surface of the convex hull side groove of the upper easy-open cover is abutted with the upper plane of the pull ring of the lower easy-open cover, and the bottom surface of the convex hull side groove of the upper easy-open cover is abutted with the top surface of the convex hull of the lower easy-open cover.
Preferably, the position of the convex hull and the pull tab side groove on the easy-open lid body is symmetrical with respect to the short axis of the easy-open lid. Because the top surface of the convex hull can have a certain area, and the bottom surface of the pull ring side groove also has a certain area, the support requirement of the easy-open end above can be met as long as the convex hull and the pull ring side groove are mutually abutted, but when the positions of the convex hull and the pull ring side groove on the cover body of the easy-open end are symmetrical relative to the short axis of the easy-open end, more contact areas are arranged between the convex hull and the pull ring side groove, and the support can bear load better and have larger support allowance.
Preferably, the longitudinal section of the groove in the direction of the long axis of the easy-open end is of a trapezoidal structure with a narrow lower part and a wide upper part, the lug boss side groove is a long groove penetrating through the long axis of the easy-open end, the long groove is a linear groove, a broken line groove or an arc-shaped groove, the long groove is symmetrical relative to the center line of the pull ring, and the distance between two ends of the bottom surface of the long groove is greater than the maximum width of the pull ring. Because the upper plane formed by the pull ring has enough length and width, the length of the lug boss side groove and the position in the long axis direction of the easy-open lid are required to be balanced relatively low, so that the arrangement of the lug boss side groove can be facilitated by adopting the elongated slot as the lug boss side groove, and the integral layout of the groove on the easy-open lid body is facilitated. The lug boss side grooves can also be two short grooves respectively corresponding to the two side edges of the pull ring.
Preferably, the groove further comprises a lower ring groove arranged below the pull ring of the easy-open end, and the lower ring groove is arched and has a symmetrical structure relative to the central line of the pull ring. The lower ring groove below the pull ring of the easy-open cover is favorable for enhancing the structural strength of the cover body at the rear part of the olecranon on the pull ring, so that the olecranon tip can puncture the notch on the cover body when the pull ring is pulled up, and the easy-open cover can be conveniently opened.
Preferably, the convex hull is in a round platform shape or a trapezoid platform shape, and the longitudinal section of the convex hull in the direction of the long axis of the easy-open lid is in a trapezoid structure with a narrow top and a wide bottom. The convex hull is in a round platform shape or a trapezoid platform shape, so that the forming processing of the easy-open end can be facilitated, and the convex hull is manufactured simultaneously on a station for manufacturing a pull ring rivet of the easy-open end without adding an independent plane-shaped station.
Preferably, the convex hull is cylindrical, the longitudinal section of the convex hull is a rectangular structure with the same width at the upper part and the lower part, and when the easy-open lids are placed in the same direction in an overlapping mode, the top surface of the convex hull of the lower easy-open lid forms a supporting part of the convex hull of the upper easy-open lid, wherein the upper plane of the convex hull of the lower easy-open lid forms an upper plane. When the convex hulls adopt a cylindrical structure, because the sizes of the upper part and the lower part of the convex hulls are consistent, even if the easy-open lids are placed in a same-direction overlapping mode, in two adjacent upper and lower easy-open lids, because the convex hulls of the lower easy-open lids cannot enter the concave surfaces of the convex hulls of the upper easy-open lids, the inclination angle of the easy-open lids after overlapping is very small, the situation that the side notches of the upper easy-open lids are contacted with the side surfaces of the lower easy-open lids can be avoided, and the situation that the orientation of individual easy-open lids is wrong (namely, the requirement of positive and negative arrangement is not met) when a plurality of easy-open lids.
Preferably, the top surface of the convex hull extends outwards to form a circular expansion support plate, and the diameter of the expansion support plate is larger than the outer diameter of the cylindrical convex hull. The top surface of the convex hull is provided with the extension supporting plate which extends outwards, and the diameter of the extension supporting plate is larger than the outer diameter of the cylindrical convex hull (namely the diameter of the upper end part of the convex hull is larger than the diameter of the lower end part), thus, when the easy-open lids are placed in the same direction, in two adjacent easy-open lids from top to bottom, because the extension supporting plate on the convex hull of the easy-open lid at the lower part can completely support the bottom of the convex hull of the easy-open lid at the upper part, the overlapped easy-open lid at the upper part can be kept in a horizontal state without deflection, the cover edge notch of the easy-open lid at the upper part can be prevented from contacting with the edge surface of the easy-open lid at the lower part, and when the direction of the easy-open lid possibly appears in the production process of the easy-open lid, the problem that the surface.
A method for preventing the cover edge from being scratched of an easy-open cover, wherein the easy-open cover is a noncircular rectangular cover or an elliptical cover, the center line of a pull ring is on the major axis of the easy-open cover, the pull ring is arranged at one end of the easy-open cover in the length direction, and a convex hull is arranged at the other end of the easy-open cover in the length direction, the method comprises the following steps:
a. the pull ring detection device for detecting the position of a pull ring of the easy-open end and the steering device for rotating the easy-open end are arranged above a conveyor belt in the packaging process of the easy-open end, the pull ring detection device is positioned on the upstream side of the conveyor belt, the steering device is positioned on the downstream side of the conveyor belt, and the pull ring detection device and the steering device are both connected with a conveyor belt controller.
b. When the pull ring detection device detects that the easy-open end on the conveyor belt is in the same direction as the adjacent previous easy-open end and the previous easy-open end is not subjected to steering treatment, the conveyor belt controller judges that the easy-open end needs to be steered, when the easy-open end passes through the steering device at the downstream side of the conveyor belt, the conveyor belt controller opens the adsorption device to suck the easy-open end, the steering motor on the steering device rotates to drive the easy-open end to rotate 180 degrees, the adsorption device is closed, the steered easy-open end falls onto the conveyor belt, and the pull ring positions of the easy-open end subjected to steering treatment on the conveyor belt are arranged in the order of front-back-front-back. For an iron easy-open cover, the adsorption device can use an electromagnet and adopts a mode of directly sucking the easy-open cover; for the aluminum easy-open cover, the adsorption device can adopt a vacuum (negative pressure) adsorption device, and the aluminum easy-open cover is sucked and lifted by using the negative pressure. Rotation here means rotation about a vertical axis with the pull ring facing in the opposite direction.
c. The easy-open ends are overlapped at the output end of the conveyor belt in sequence, and the pull rings of the two adjacent easy-open ends are opposite in direction after being overlapped. Therefore, each overlapped easy-open cover is in a horizontal state, and the problem that the surface of the easy-open cover is coated with a film and damaged due to the fact that the cover edge notch of the upper easy-open cover is in contact with the cover edge surface of the lower easy-open cover is effectively solved.
Preferably, the pull ring detection device comprises two detection heads which are arranged in the moving direction of the conveyor belt at intervals, and the distance between the two detection heads is equal to the distance from one side edge of the easy-open cover close to the pull ring to the front end part of the pull ring in the length direction of the easy-open cover; the two detection heads comprise light emitting devices and light receiving devices, the light emitting devices comprise laser diodes and focusing lenses, light spots formed on the easy-open cover by the light emitting devices are circular, and the diameter of each circular light spot is 1.2mm-1.8 mm.
Because the lid and the pull ring of easy-open end adopt different material and technology preparation, for example under general condition, the last spraying of iron lid has anti rust coating, this coating is yellow mostly, the reflection rate is lower, and the pull ring is mostly aluminium matter, its surface is silvery white, the reflection rate is higher, and the conveyer belt chooses black more, basically not reflect light, just so can utilize the different reflection rates of two parts on the easy-open end to judge the orientation of easy-open end, because two distance between the detection head are shorter, this distance can be so that when the detection head that is located the downstream side detects the edge that a pull ring is located the easy-open end of easy-open end, the check point that is located the detection head of upper reaches side is located the effective detection area of pull ring. If the pull ring is positioned at the front part of the easy-open cover during detection, when the detection head positioned at the downstream side detects the reflection signal of the cover body, the detection head positioned at the upstream side should simultaneously detect the reflection signal of the pull ring; if the detection head located on the downstream side detects the reflection signal of the cover body, the detection head located on the upstream side simultaneously detects the reflection signal of the cover body, the pull ring is located on the rear portion of the easy-open cover, so that the orientation of the easy-open cover can be determined, then the conveyor belt controller does not process the easy-open cover according to the arrangement principle that the orientation of two adjacent easy-open covers after the turning process is opposite, and when the orientation of two adjacent easy-open covers is the same, the turning process is carried out on the latter easy-open cover, so that the arrangement requirement of the easy-open cover is met.
Preferably, the steering device comprises a mounting bracket, a steering motor and a steering plate parallel to the conveyor belt, the steering motor is connected with the middle part of the steering plate through a steering shaft, the two adsorption devices are fixed at the two ends of the steering plate and are symmetrically arranged relative to the rotation center of the steering plate, and the time required by the steering plate to rotate 180 degrees is matched with the time required by the easy-open-end moving from the upstream adsorption device to the downstream adsorption device.
When the pull ring detection device detects that the orientation of the rear easy-open end on the conveyor belt is the same as the orientation of the adjacent front easy-open end and the front easy-open end is not subjected to steering treatment, the conveyor belt controller judges that the easy-open end needs to be steered. When the time required for the turning plate to rotate by 180 degrees is the same as the time required for the easy-open end to move from the upstream side adsorption device to the downstream side adsorption device, the turned easy-open end is put back to the original position on the conveyor belt, and the effect can be realized by controlling the moving speed of the conveyor belt by the conveyor belt controller to be matched with the rotating speed of the turning plate.
The invention has the advantages that the problems that the coating film on the edge surface of the easy-open cover is easily scratched by the edge cut and the product quality guarantee period are seriously influenced in the production and transportation processes of the easy-open cover in the prior art are effectively solved, the problem that the coating film on the edge surface of the easy-open cover is scratched by the edge cut can be effectively solved, the product quality is ensured, and the high practical value is realized.
Drawings
FIG. 1 is a schematic view showing the structure of an easy-open end of embodiment 1 for preventing the edge of the end from being scratched according to the present invention;
FIG. 2 is a bottom view of FIG. 1;
FIG. 3 is a schematic view showing the stacking effect of the easy open end of example 1 when the tabs are arranged in reverse;
FIG. 4 is a schematic view showing the structure of embodiment 2 of the easy opening lid of the present invention for preventing the lid edge from being scratched;
FIG. 5 is a bottom view of FIG. 4;
FIG. 6 is a schematic view showing the stacking effect of the easy open end of example 2 when the tabs are arranged in the reverse direction;
FIG. 7 is a schematic view showing the structure of embodiment 3 of the easy opening lid of the present invention for preventing the lid edge from being scratched;
FIG. 8 is a schematic view showing the structure of embodiment 4 of the easy opening lid of the present invention for preventing the lid edge from being scratched;
FIG. 9 is a schematic view of one configuration of the pull tab detection apparatus of the present invention;
FIG. 10 is a schematic view of one construction of the steering apparatus of the present invention;
FIG. 11 is a schematic view of a prior art easy open end construction;
FIG. 12 is a bottom view of FIG. 11;
FIG. 13 is a schematic view of a prior art easy open end with the tabs stacked in the same direction;
FIG. 14 is a schematic view of a prior art easy open end with tabs stacked in reverse orientation.
In the figure: 1. the cover body, 2, pull ring, 3, olecranon, 4, convex hull, 5, top surface, 6, upper plane, 7, supporting plane, 8, cover edge notch, 9, cover edge surface, 10, long axis, 11, convex hull edge groove, 12, pull ring edge groove, 13, short axis, 14, ring lower groove, 15, expansion supporting plate, 16, conveyor belt, 17, steering motor, 18, adsorption device, 19, steering plate, 20, mounting bracket, 21, steering shaft, 22, detection head, 23, light emitting device, 24, light receiving device and 25, easy open cover.
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, an easy-open end for preventing the edge of the end from being scratched comprises an easy-open end 25 and a pull ring 2 arranged on one side of the easy-open end, wherein a eagle beak 3 on the pull ring points to the outer edge of the easy-open end, the easy-open end is of a symmetrical structure relative to the center line of the pull ring, a convex hull 4 protruding upwards is integrally formed on the cover on the side of the easy-open end away from the pull ring, the convex hull is in a circular truncated cone shape, and the longitudinal section of the convex hull in the direction of the long axis of the easy-open end is of a trapezoidal structure with a narrow; the top surface 5 of the convex hull is in the same horizontal plane as the upper plane 6 of the tab. When the easy-open ends are overlapped, in two adjacent upper and lower easy-open ends, the convex hull top surface of the lower easy-open end and the upper plane of the pull ring form a supporting plane 7 of the upper easy-open end, and a gap is formed between the cover edge notch 8 of the easy-open end and the cover edge surface 9 of the easy-open end. FIG. 3 shows the easy open end of the present embodiment placed in a reversed overlapping manner with a gap between the lid side notch of the easy open end and the lid side surface of the easy open end.
The easy-open end of the embodiment is a non-circular rectangular end, the center line of the pull ring is arranged on the long axis 10 of the easy-open end, the pull ring is arranged at one end of the easy-open end in the length direction, and the convex hull is arranged at the other end of the easy-open end in the length direction; the two convex hulls are symmetrically arranged on two sides of the long axis of the easy-open end, and the distance between the two convex hulls is larger than the maximum width of the pull ring. The structure of the present embodiment is also applicable to various easy-open lids such as a round lid, a square lid, and an oval lid.
Example 2
In embodiment 2 shown in fig. 4 and 5, a plurality of grooves are integrally formed on the cover of the easy-open lid, the grooves include a convex hull side groove 11 arranged on one side of the convex hull on the cover of the easy-open lid and two pull ring side grooves 12 symmetrically arranged on two sides of the pull ring, the depth of the convex hull side groove is the same as that of the pull ring side groove, and the positions of the convex hull and the pull ring side groove on the cover of the easy-open lid are symmetrical relative to the short axis 13 of the easy-open lid. FIG. 6 shows that, when the easy open ends are placed in a reversed overlapping manner, in two adjacent easy open ends, the bottom of the convex closure side groove of the upper easy open end abuts against the upper plane of the pull ring of the lower easy open end, and the bottom of the pull ring side groove of the upper easy open end abuts against the top of the convex closure of the lower easy open end.
The longitudinal section of the groove in the direction of the long axis of the easy-open end is of a trapezoidal structure with a narrow lower part and a wide upper part, the lug boss side groove is a long groove penetrating through the long axis of the easy-open end, the long groove is a linear groove, the long groove is symmetrical relative to the center line of the pull ring, and the distance between two ends of the bottom surface of the long groove is greater than the maximum width of the pull ring. The groove of the embodiment also comprises a lower ring groove 14 arranged below the pull ring of the easy-open end, and the lower ring groove is arched and has a symmetrical structure relative to the central line of the pull ring; the rest is the same as in example 1.
Example 3
In the embodiment 3 shown in fig. 7, the convex hull is cylindrical, the longitudinal section of the convex hull is a rectangular structure with the same width at the upper and lower parts, when the easy-open lids are placed in an overlapping way, the top surface of the convex hull of the lower easy-open lid forms the supporting part of the convex hull of the upper easy-open lid, the upper plane of the convex hull of the lower easy-open lid forms the upper plane; the rest is the same as example 1 or example 2.
Example 4
In embodiment 4 shown in fig. 8, the top surface of the convex hull extends outward to form a circular expanded support plate 15, the diameter of which is larger than the outer diameter of the cylindrical convex hull; the rest is the same as example 1 or example 2.
A method for preventing the cover edge from being scratched of an easy-open cover, wherein the easy-open cover is a noncircular rectangular cover or an elliptical cover, the center line of a pull ring is on the major axis of the easy-open cover, the pull ring is arranged at one end of the easy-open cover in the length direction, and a convex hull is arranged at the other end of the easy-open cover in the length direction, and the method is characterized by comprising the following steps of:
a. the pull ring detection device for detecting the position of a pull ring of the easy-open end and the steering device for rotating the easy-open end are arranged above a conveyor belt in the packaging process of the easy-open end, the pull ring detection device is positioned on the upstream side of the conveyor belt, the steering device is positioned on the downstream side of the conveyor belt, and the pull ring detection device and the steering device are both connected with a conveyor belt controller.
b. When the pull ring detection device detects that the easy-open end on the conveyor belt is in the same direction as the adjacent previous easy-open end and the previous easy-open end is not subjected to steering treatment, the conveyor belt controller judges that the easy-open end needs to be steered, when the easy-open end passes through the steering device at the downstream side of the conveyor belt, the conveyor belt controller opens the adsorption device to suck the easy-open end, the steering motor on the steering device rotates to drive the easy-open end to rotate 180 degrees, the adsorption device is closed, the steered easy-open end falls onto the conveyor belt, and the pull ring positions of the easy-open end subjected to steering treatment on the conveyor belt are arranged in the order of front-back-front-back.
c. The easy-open ends are overlapped at the output end of the conveyor belt in sequence, and the pull rings of the two adjacent easy-open ends are opposite in direction after being overlapped.
The pull ring detection device of the invention is shown in fig. 9 and comprises two detection heads 22 which are arranged in the moving direction of the conveyor belt 16 at intervals, and the distance between the two detection heads is equal to the distance from one side edge of the easy-open cover 25 close to the pull ring 2 to the front end part of the pull ring in the length direction; the two detection heads comprise a light emitting device 23 and a light receiving device 24, the light emitting device comprises a laser diode and a focusing lens, light spots formed on the easy-open cover by the light emitting device are circular, and the diameter of each circular light spot is 1.6 mm.
Because the lid and the pull ring of easy-open end adopt different material and technology preparation, for example under general condition, the last spraying of iron lid has anti rust coating, this coating is yellow mostly, the reflection rate is lower, and the pull ring is mostly aluminium matter, its surface is silvery white, the reflection rate is higher, and the conveyer belt chooses black more, basically not reflect light, just so can utilize the different reflection rates of two parts on the easy-open end to judge the orientation of easy-open end, because two distance between the detection head are shorter, this distance can be so that when the detection head that is located the downstream side detects the edge that a pull ring is located the easy-open end of easy-open end, the check point that is located the detection head of upper reaches side is located the effective detection area of pull ring. If the pull ring is positioned at the front part of the easy-open cover during detection, when the detection head positioned at the downstream side detects the reflection signal of the cover body, the detection head positioned at the upstream side should simultaneously detect the reflection signal of the pull ring; if the detection head located on the downstream side detects the reflection signal of the cover body, the detection head located on the upstream side simultaneously detects the reflection signal of the cover body, the pull ring is located on the rear portion of the easy-open cover, so that the orientation of the easy-open cover can be determined, then the conveyor belt controller does not process the easy-open cover according to the arrangement principle that the orientation of two adjacent easy-open covers after the turning process is opposite, and when the orientation of two adjacent easy-open covers is the same, the turning process is carried out on the latter easy-open cover, so that the arrangement requirement of the easy-open cover is met.
The turning device of the present invention is shown in fig. 10, which comprises a mounting bracket 20, a turning motor 17 and a turning plate 19 parallel to the conveyor belt, wherein the turning motor is connected with the middle part of the turning plate through a turning shaft 21, two adsorption devices 18 (two electromagnets in the embodiment) are fixed at two ends of the turning plate and are symmetrically arranged relative to the turning center of the turning plate, and the time required for the turning plate to rotate 180 degrees is matched with the time required for the easy-open cover to move from the adsorption device at the upstream side to the adsorption device at the downstream side.
When the pull ring detection device detects that the orientation of the rear easy-open end on the conveyor belt is the same as the orientation of the adjacent front easy-open end and the front easy-open end is not subjected to steering treatment, the conveyor belt controller judges that the easy-open end needs to be steered. When the time required for the turning plate to rotate by 180 degrees is the same as the time required for the easy-open end to move from the upstream side adsorption device to the downstream side adsorption device, the turned easy-open end is put back to the original position on the conveyor belt, and the effect can be realized by controlling the moving speed of the conveyor belt by the conveyor belt controller to be matched with the rotating speed of the turning plate.
The invention integrally forms a convex hull protruding upwards on the cover body at one side of the easy-open end far away from the pull ring, and the top surface of the convex hull and the upper plane of the pull ring are on the same horizontal plane; therefore, the easy-open end forms a plurality of supporting points or supporting surfaces on the equal-height surface where the upper plane of the pull ring is located, when the easy-open end is overlapped, as long as the upper easy-open end and the lower easy-open end are overlapped in a staggered mode (the positions of the pull ring are opposite), the supporting points provided by the lower easy-open end can enable the upper easy-open end to be in a horizontal state without inclination, so that the condition that the edge of the lower easy-open end is coated with a film by the edge cut of the upper easy-open end can be avoided, and the product quality is ensured. The structure is suitable for various easy-open lids such as round lids, rectangular lids, oval lids and the like.
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 prevent scotch easy-open end, easy-open end includes lid (1) and sets up pull ring (2) in lid one side, the directional easy-open end outer fringe in olecranon (3) on the pull ring, easy-open end be symmetrical structure for the central line of pull ring, its characterized in that, integrated into one piece has ascending bellied convex closure (4) on the lid of pull ring one side is kept away from to the easy-open end, top surface (5) of convex closure and last plane (6) of pull ring are on same horizontal plane, easy-open end overlap when placing, in two adjacent easy-open ends from top to bottom, the convex closure top surface of below easy-open end and the last plane of pull ring constitute support plane (7) of top easy-open end, have the clearance between easy-open end's lid limit incision (8) and easy-open end's lid face (9).
2. The easy open end with a scratch preventive lid edge as set forth in claim 1, wherein the easy open end is a non-circular rectangular lid or an elliptical lid, the center line of the tab is on the long axis (10) of the easy open end, the tab is provided at one end in the length direction of the easy open end, and the convex hull is provided at the other end in the length direction of the easy open end; the two convex hulls are symmetrically arranged on two sides of the long axis of the easy-open end, and the distance between the two convex hulls is larger than the maximum width of the pull ring.
3. The easy open end of claim 2, wherein the easy open end has a groove integrally formed therein, the groove comprises at least one convex side groove (11) formed on one side of the convex closure of the easy open end and two tab side grooves (12) formed on both sides of the tab, the depth of the convex side groove is the same as that of the tab side groove, when the easy open ends are placed in a reverse overlapping manner, the bottom of the convex side groove of the upper easy open end abuts against the upper plane of the tab of the lower easy open end, and the bottom of the tab side groove of the upper easy open end abuts against the top of the convex closure of the lower easy open end.
4. The easy open end with a tamper proof lid edge as set forth in claim 3, wherein the location of the convex hull and the tab edge groove on the easy open lid body is symmetrical with respect to a minor axis (13) of the easy open lid.
5. An easy open end for preventing cover edge scratches as set forth in claim 3, wherein a longitudinal section of said groove in a direction of a long axis of the easy open end has a trapezoidal configuration having a narrow lower portion and a wide upper portion, said projection edge groove is an elongated groove extending through the long axis of the easy open end, said elongated groove is a linear groove, a polygonal line groove or an arc groove, the elongated groove is symmetrical with respect to a center line of the tab, and a distance between both ends of a bottom surface of the elongated groove is larger than a maximum width of the tab.
6. The easy open end for preventing edge scratches as set forth in claim 3, wherein said recess further comprises a lower ring groove (14) disposed below the tab of the easy open end, said lower ring groove having an arcuate shape and a symmetrical configuration with respect to the center line of the tab.
7. The easy open end for preventing the cover edge from being scratched as claimed in any one of claims 1 to 6, wherein said convex hull has a truncated cone shape or a trapezoidal platform shape, and a longitudinal section of the convex hull in the direction of the long axis of the easy open end has a trapezoidal structure with a narrow top and a wide bottom.
8. The easy open end for preventing edge scratches as claimed in any one of claims 1 to 6, wherein said convex hull is formed in a cylindrical shape, the longitudinal section of said convex hull has a rectangular shape with a width equal to the vertical width, and when said easy open ends are placed in a same direction, the top surface of said convex hull of said lower easy open end forms a support portion of said convex hull of said upper easy open end formed by the upper plane.
9. The easy open end for preventing a cover rim from being scratched according to claim 8, wherein the top surface of said convex closure is extended outwardly to form a circular expanded support plate (15) having a diameter larger than the outer diameter of the cylindrical convex closure.
10. A method for preventing fraying of a lid edge of an easy open lid as set forth in claim 1, said easy open lid being a non-circular rectangular lid or an oval lid, a center line of said tab being on a major axis of said easy open lid, said tab being provided at one end in a length direction of said easy open lid, and said convex hull being provided at the other end in the length direction of said easy open lid, comprising the steps of:
a. the method comprises the following steps that a pull ring detection device for detecting the position of a pull ring of the easy-open end and a steering device for steering the rotation direction of the easy-open end are arranged above a conveyor belt of an easy-open end packaging process, the pull ring detection device is positioned on the upstream side of the conveyor belt, the steering device is positioned on the downstream side of the conveyor belt, and the pull ring detection device and the steering device are both connected with a conveyor belt controller;
b. when the pull ring detection device detects that the easy-open end on the conveyor belt and the adjacent previous easy-open end face the same direction and the previous easy-open end is not subjected to steering treatment, the conveyor belt controller judges that the easy-open end needs to be steered, when the easy-open end passes through the steering device at the downstream side of the conveyor belt, the conveyor belt controller opens the adsorption device to suck the easy-open end, and simultaneously a steering motor on the steering device rotates to drive the easy-open end to rotate 180 degrees and simultaneously closes the adsorption device, and the steered easy-open end falls onto the conveyor belt, so that the pull ring positions of the easy-open end subjected to steering treatment on the conveyor belt are arranged in the order of front-back-front-back;
c. the easy-open ends are overlapped at the output end of the conveyor belt in sequence, and the pull rings of the two adjacent easy-open ends are opposite in direction after being overlapped.
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| CN201910871437.5A CN111216998B (en) | 2019-09-16 | 2019-09-16 | Easy-open lid capable of preventing lid edge from being scratched and method thereof |
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| CN201910871437.5A CN111216998B (en) | 2019-09-16 | 2019-09-16 | Easy-open lid capable of preventing lid edge from being scratched and method thereof |
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| CN111216998B (en) | 2022-03-11 |
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Denomination of invention: Easy to open lid and its method for preventing edge scratches Effective date of registration: 20231022 Granted publication date: 20220311 Pledgee: Yiwu Branch of China Construction Bank Co.,Ltd. Pledgor: YIWU EASY OPEN END INDUSTRY Corp. Registration number: Y2023330002458 |
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