CN103786963A - Packaging lid of milk powder tank - Google Patents

Abstract

The invention relates to a packaging cover for a milk powder can, comprising a cover body, a cover ring, a hinge and a locking piece. The circumference of the cover body is provided with an outer wall, an inner wall and a gap, and a lock is provided at the gap, and the cover ring is formed by a and a sealing ring, the inner wall of the base ring is provided with convex ribs, the sealing ring is provided with a lock seat, and the connection between the base ring and the sealing ring is provided with a step; the cover is buckled on the step of the cover ring, and the cover The lock of the body is clamped on the lock seat of the sealing ring, the hinge is connected between the cover and the cover, and the inner wall of the cover is provided with an extended edge at the bottom edge on one side of the hinge. The invention adopts the composite structure of the cover body and the cover ring, which is convenient for fast filling in the filling link. When sealing, the cover body and the cover ring seal the packaging can. In the use link, due to the guidance of the extended side, the cover body When closed, the inner wall easily slides into the inner side of the lip of the sealing ring, making the use more convenient.

Description

Packaging lid of a milk powder can

technical field

The invention relates to the technical field of food packaging, in particular to a packaging cover for a milk powder can.

technical background

In the prior art, most of the packaging cans used for packaging food are metal cans. The metal cans are usually provided with an outer cover and a sealing layer. , Cause the secondary sealing difficulty of metal outer cover and tank body, both be inconvenient to the storage of food for a long time, be inconvenient to take food again and again of food.

As for milk powder, the amount of each time is small, and each can is used for a long time, which puts forward higher requirements for the sealing of the packaging cans. At present, iron cans are generally used in the market, and two types of sealing cans are used for the can lids. There are many forms, the first one is clamping and extrusion sealing, the fit is tighter, and the sealing effect is better, but the disadvantage of this type of tank cover is that it is troublesome to open the cover, and it is often necessary to use other tools such as scissors to pry it up, which cannot achieve convenience. At the same time, due to frequent prying, the tank cover is easily deformed and cannot be tightly combined with the tank body, so that the sealing effect is weakened.

Therefore, the second situation is more and more appearing in actual use. The second kind is a milk powder cover made of all plastics. The sealing cap includes: a trim, a turning flap and a plastic tank cover; the trim and the plastic tank cover are connected through the flip flap, and it is characterized in that a groove is formed under the trim for fastening In the milk powder can, the inner wall of the embedded groove is provided with a raised band. There are two or three raised strips, which are evenly distributed. The trimming and the plastic tank cover are respectively provided with matching snap rings and clamping openings on the corresponding sides of the turning flaps. The inner side of the corner of the plastic tank cover is provided with several strip-shaped reinforcing ribs, and the strip-shaped reinforcing ribs are perpendicular to the inner wall of the tank cover. But it also has the following problems: 1. Insufficient sealing; 2. The opening and closing of the milk powder cover may be misplaced, which affects practicality.

Another example is that the utility model patent with application number 201320838666.5 discloses a packaging cover for a milk powder can, which is an intermediate product developed by our company. The above-mentioned problems cannot be completely solved in the technical solution of this patent.

Contents of the invention

The purpose of the present invention is to provide a packaging cover for milk powder cans with simple structure and beautiful appearance.

In order to achieve the above purpose, the following technical solution is provided: a packaging cover for a milk powder can, including a cover body, a cover ring, a hinge and a locking piece, the circumference of the cover body is provided with an outer wall and an inner wall, and the outer wall is provided with a gap , the gap is provided with a lock connected to the cover, the cover ring is composed of a base ring and a sealing ring, the diameter of the base ring is equal to the outer wall of the cover, the inner wall of the base ring is provided with ribs, and the sealing ring has a lip along the circumference There is a lock seat on the sealing ring, a step is provided at the connection between the base ring and the sealing ring, and a connecting contact is provided around the lock plate; the cover is buckled on the step of the cover ring, and the cover of the cover is The outer wall and the inner wall are clamped on the outer and inner sides of the lip of the sealing ring. The lock of the cover body is clamped on the lock seat of the sealing ring. The hinge and the lock are arranged radially symmetrically, and the hinge is connected to the outer wall of the cover body and the cover ring. between the base rings; the locking piece is located outside the lock of the cover, and the connecting contact of the locking piece is connected with the outer wall of the cover and the base ring of the cover ring. It is characterized in that the inner wall of the cover is in the hinge The bottom edge of one side is provided with an extended edge.

The extended side is radially symmetrical to the locking buckle.

The length of the extended side is 1/3-1/4 of the length of the bottom of the inner wall of the cover.

The height of the extended side is 2mm-4mm.

The height of the extended side is the height difference between the outer wall and the inner wall of the cover.

The radial section of the extended side is an inverted triangle or an inverted trapezoid, and the slope of the inverted triangle or inverted trapezoid is the side of the inner wall close to the outer wall.

The interference fit of the inner wall is arranged inside the lip of the sealing ring, wherein the interference of the inner wall is 1.2mm.

Compared with the prior art, the present invention has the advantages of adopting the composite structure of the cover body and the cover ring. In the filling process, the tank body is open, which is convenient for fast filling. When sealing, the cover ring and the packaging tank are pressed together. , the cover body and the cover ring seal the packaging jar. In the use link, the cover body is easy to open repeatedly through the hinge, the cover body and the cover ring are not disconnected, and can maintain a good sealing environment for the food. In addition, due to the guidance of the extended side, when the cover is closed, the inner wall can easily slide into the inner side of the lip of the sealing ring, making it more convenient to use.

Description of drawings

Further illustrate the present invention below in conjunction with accompanying drawing and specific embodiment:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a partially enlarged schematic diagram of A place in Fig. 1;

Fig. 3 is a partially enlarged schematic diagram of place B in Fig. 1;

FIG. 4 is a side view of FIG. 1 .

Detailed ways

In order to make the technical means, objectives and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

As shown in Figures 1 to 4, the present invention includes a cover body 1, a cover ring 2, a hinge 3 and a locking plate 4, an outer wall 11 and an inner wall 12 are arranged on the circumference of the cover body 1, and a notch 13 is arranged on the outer wall 11. , the gap 13 is provided with a lock 14 connected to the cover body 1, the cover ring 2 is composed of a base ring 21 and a sealing ring 22, the diameter of the base ring 21 is equal to the outer wall 11 of the cover body 1, and the inner wall of the base ring 21 is provided with Convex ribs 24, the sealing ring 22 has a lip edge along the circumference, the sealing ring 22 is provided with a lock seat 24, the connection between the base ring 21 and the sealing ring 22 is provided with a step 23, and the periphery of the locking plate 4 is provided with connecting contacts 41; the cover body 1 is fastened on the step 23 of the cover ring 2, and the outer wall 11 and inner wall 12 of the cover body 1 are clamped on the outer side and inner side of the lip of the sealing ring 22, and the lock buckle 14 of the cover body 1 is engaged On the lock seat 24 of the sealing ring 22, the radial symmetry of the hinge 3 and the lock 14 is arranged, and the hinge 3 is connected between the outer wall 11 of the cover body 1 and the base ring 21 of the cover ring 2; On the outside of the lock 14 of the cover 1, the connecting contact 41 of the locking piece 4 is connected with the outer wall 11 of the cover 1 and the base ring 21 of the cover ring 2, the inner wall 12 of the cover 1 is at the bottom of the hinge 3 side The edge is provided with an extended edge 15 .

After testing, the extended side 15 is set at a position radially symmetrical to the lock buckle 14, which is the position where the cover first slides into the inner side of the lip of the sealing ring 22, and the optimal solution side length of the extended side 15 is the cover 1 1/3~1/4 of the length of the bottom side of the inner wall 12, the optimal solution height is 2mm~4mm or the height difference between the outer wall and the inner wall of the cover, which can ensure that the extension side 15 can be extended without affecting the entire buckle of the cover. Under the situation, it can play a good role in positioning transition.

On this basis, the radial cross-section of the extended side 15 can be an inverted triangle, an inverted trapezoid, or other shapes with a slope. The slope is the side of the inner wall close to the outer wall. This inclined surface can increase the convenience of sliding in the extension edge 15, and it is easier to buckle off the cover body.

Considering the good sealing effect, our company has conducted a lot of experiments and found that when the interference of the inner wall 12 is 1.2mm, the interference fit between the inner wall 12 and the inside of the lip of the sealing ring 22 is the most ideal. Under the interference amount, the inner wall and the sealing ring are more tightly combined, which not only ensures the sealing effect, but also does not affect the opening and closing of the cover body, which can be said to kill two birds with one stone.

Filling process of the present invention:

When filling, place the formed tank on the filling line with the upper mouth facing upwards, and liquid or solid food is quickly poured in from the open upper mouth of the tank to complete the filling;

Referring to Figures 1 to 4, when adding a cover to the tank body, buckle the cover body 1 together with the cover ring 2 on the tank body and apply pressure so that the base ring 21 is fitted on the outer wall of the tank body, and the base ring 21 The ribs 24 are extruded and sealed with the outer wall of the tank body;

Referring to Fig. 1, when packing, the cover body 1 of the tank body faces upwards, and is placed in the case successively, and packing is implemented; the packing process of the present invention is completed.

The use process of the present invention:

When using for the first time, buckle the locking piece 4 on the outside of the lock 14 of the cover body 1 by hand, tear off the locking piece 4 from the connecting contact 41 connected to the outer wall 11 of the cover body 1 and the base ring 21 of the cover ring 2, Apply force at the lock 14 of the cover 1, so that the buckle groove of the lock 14 on the cover 1 is separated from the protrusion of the lock seat 24 on the cover ring 2, and the cover 1 is rotated around the hinge 3 to lift it up and take it out Food; if the food in the tank has not been used up once, the cover body 1 is rotated around the hinge 3 and closed. At this time, because the extension edge 15 slides into the inner side of the sealing ring 22 lip before the cover body 1, the cover body 1 is guided smoothly This is more convenient for the use of the entire packaging cover, and it solves the problem that the cover body and the cover ring are often misaligned and fastened in the current packaging cover used on the market. At the same time, because the inner wall 12 and the sealing ring 22 The selection of the interference fit on the inside of the edge makes the outer wall 11 and inner wall 12 of the cover 1 more tightly clamped on the outer and inner sides of the lip of the sealing ring 22, making the cover 1 and the cover ring 2 airtight and sealing the packaging can , the food in the tank is sealed again, and the cover 1 will not fall off or be lost from the tank during use.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and description are only used to illustrate the principle of the present invention, and the present invention also has various aspects without departing from the spirit and scope of the present invention. Various changes and improvements, these changes and improvements all belong to the scope of the present invention. The claimed scope of the invention is defined by the appended claims and their equivalents.

Claims (7)

1. A packaging cover for a milk powder can, including a cover body (1), a cover ring (2), a hinge (3) and a locking piece (4), and the circumference of the cover body (1) is provided with an outer wall (11) And the inner wall (12), the outer wall (11) is provided with a gap (13), the gap (13) is provided with a lock (14) connected with the cover (1), and the cover ring (2) is formed by the base ring (21) and sealing ring (22), the base ring (21) is equal to the diameter of the outer wall (11) of the cover (1), the inner wall of the base ring (21) is provided with ribs (24), the sealing ring (22) along the circumference There is a lip, the sealing ring (22) is provided with a lock seat (24), the connection between the base ring (21) and the sealing ring (22) is provided with a step (23), and the periphery of the locking piece (4) is provided with Connecting contacts (41); the cover (1) is buckled on the step (23) of the cover ring (2), and the outer wall (11) and inner wall (12) of the cover (1) are clamped by the sealing ring (22) On the outside and inside of the lip, the lock (14) of the cover (1) is clamped on the lock seat (24) of the sealing ring (22), and the hinge (3) and the lock (14) radially Symmetrically arranged, the hinge (3) is connected between the outer wall (11) of the cover (1) and the base ring (21) of the cover (2); the locking piece (4) is set on the lock of the cover (1) On the outside of the buckle (14), the connecting contact (41) of the locking piece (4) is connected with the outer wall (11) of the cover body (1) and the base ring (21) of the cover ring (2). It is characterized in that the cover The inner wall (12) of the body (1) is provided with an extended edge at the bottom edge on one side of the hinge (3). 2 . The packaging cover of a milk powder can according to claim 1 , characterized in that, the extension side and the lock ( 14 ) are arranged radially symmetrically. 3 . 3. The packaging cover of a milk powder can according to claim 2, characterized in that, the side length of the extended side is 1/3-1/4 of the bottom side length of the inner wall (12) of the cover body (1) . 4 . The packaging cover of a milk powder can according to claim 3 , wherein the height of the extended side is 2mm-4mm. 5 . The packaging cover of a milk powder can according to claim 3 , wherein the height of the extension side is the height difference between the outer wall ( 11 ) and the inner wall ( 12 ) of the cover body ( 1 ). 6. The packaging cover of a milk powder can according to claim 4 or 5, wherein the radial section of the extended side is an inverted triangle or an inverted trapezoid, and the slope of the inverted triangle or inverted trapezoid is the inner wall (12 ) close to the side of the outer wall (11). 7. The packaging cover of a milk powder can according to claim 1, characterized in that the inner wall (12) is provided with an interference fit inside the lip of the sealing ring (22), wherein the interference fit of the inner wall (12) The amount is 1.2mm.

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