WO2008151467A1 - A structure of can body - Google Patents

Abstract

A structure of can body mainly comprises a can body (10), a base (20) and a lid piece (30), wherein the can body (10) is tubular body, which is pressed and winded by a metal plate, the base (20) is disk body mounted on the bottom of the can body (10), the top of the can body (10) splay out to form a link ring (12), the lid piece (30) is piece body consisting of aluminum foil, the lid piece (30) clings to the top edge of the link ring (12), so as to close inner space of the can body. It is easily and without residue to take contents from the can body, convenient for use and recovering waste.

Description

 Tank structure

 The present invention relates to a container for packaging, and more particularly to a can body structure in which a top end of a can body is integrally formed outwardly, and a cover sheet is attached by the ring. Background technique

 Because the metal has the characteristics of opacity and high strength, the can body made of metal is widely used as a packaging container for food. In daily life, powdered foods such as milk powder and various brewed beverages are often seen in metal cans. Packaging and selling, the metal cans used for packaging foods are mainly composed of a can body and a can lid. Please refer to FIG. 1 and FIG. 2, the can body is mainly composed of a can body 1 and a base 2 a top frame 3 and a cover sheet 4, wherein the can body 1 is a tubular body, and the base 2 is a disk body sealed at the bottom end of the can body 1, the circumference and the periphery thereof The bottom end of the can body 1 is closely adhered and fixed. Referring to FIG. 3, the top frame 3 is a frame-shaped member covering the top end of the can body 1, and the top frame 3 is along the inner edge thereof. Forming a joint ring 302, the cover sheet 4 is a sheet body made of aluminum foil, and the cover sheet 4 is attached to the top edge of the joint ring 302, so as to close the inner space of the tank body, so as to be packaged. .

 The existing can body covers the top end of the can body 1 by using the top frame 3, and on the one hand, avoids the sharp edge of the top end of the can body 1 to cause injury, and on the other hand, utilizes the top The frame 3 forms the ring 302 for the cover sheet 4 to be adhesively positioned, thereby closing the inner space of the can body, however, the top frame 3 and the ring 302 are also The top edge of the inner space of the can body 1 is shielded. When the powdered food such as fruit, beverage or milk powder is packaged by the can body, when the powdery food in the can body is close to the use of the food, it is difficult to use the measuring spoon again. At this time, even if the can body is poured, since the ring 302 forms a retardation on the path of the pouring, the powder remaining inside the can body cannot be completely poured out, and if the can body is to be reused as a container for storing the article. The connecting ring 302 will also increase the difficulty of cleaning the tank. If the tank is directly discarded and recovered, the powder remaining in the tank will also cause troubles in the recovery and recycling of the tank. The ring 302 protrudes radially in the can body At the upper edge portion of the space, for access to the tank contents hindrance, and said contact ring 302 to be easily extends into the tank when the user's hand, causing accidental cuts or lacerations. Summary of the invention

The main object of the present invention is to provide a tank structure, wherein a top end of the can body is integrally formed with a ring, and the cover sheet is closed to close the tank body, so that the contents of the tank body can be easily and without residue for use. With abandoned back Convenience of collection.

 In order to achieve the above object, the technical solution adopted by the present invention is:

 A can body structure, comprising: a can body, a base and a cover sheet, wherein the can body is a tubular body formed by stamping and winding a metal plate piece, and the base is sealed The disc body at the bottom end of the can body, the top end of the can body is outwardly expanded to form a ring, the cover sheet is a sheet made of aluminum foil, and the cover sheet is attached to the joint The top edge of the ring is used to close the inner space of the tank.

 The can body of the present invention can be large or small in volume, and the ratio of the diameter to the height can be arbitrarily changed. Any of the materials for forming the can can be used, so that the practical range of the present invention is very wide.

 Compared with the prior art, the invention has the beneficial effects that: the contents of the can body are not blocked by the can mouth, and the use is convenient; the number of components is reduced, and the production cost is reduced. DRAWINGS

 Figure 1 is a perspective view of a conventional can body;

 Figure 2 is an axial cross-sectional view of a conventional can body;

 Figure 3 is a partial enlarged view of the portion of the ring of Figure 2;

 Figure 4 is a perspective view of a first embodiment of the present invention;

 Figure 5 is an axial cross-sectional view showing a first embodiment of the present invention;

 Figure 6 is a partial enlarged view of the ring portion of Figure 5;

 Figure 7 is a perspective view of a second embodiment of the present invention;

 Figure 8 is a schematic view showing the state of the can opening according to the second embodiment of the present invention;

 Figure 9 is a flow chart showing the assembly of the can body and the cover sheet of the present invention. detailed description

 Referring to FIG. 4 and FIG. 5, a first embodiment of a can body structure of the present invention mainly includes a can body 10, a base 20 and a cover sheet 30, wherein the can body 10 is a sheet metal stamping roll. The base body 20 is a circular disc body that is sealed at the bottom end of the can body 10, and the peripheral edge thereof is closely adhered to the bottom end of the can body 10, please refer to FIG. The top end of the can body 10 is radially outwardly expanded to form a ring 12, and a ring wall 14 is formed on the outer periphery of the ring 12, and the end of the ring wall 14 is rolled outward to form a bead 16, the cover piece 30 is a sheet made of aluminum foil, and the cover sheet 30 is attached to the top edge of the ring 12 to close the inner space of the can body for packaging the article inside the can body.

According to the foregoing, the said ring 12 is formed by the radially outward expansion of the top end of the can body 10. The cover sheet 30 is attached to the cover sheet 30, so that when the cover sheet 30 is removed to open the can body, the inner space of the can body is completely open to the outside without being blocked. Therefore, the user's hand can easily enter the inside of the tank through the opening of the top of the can, but it does not have the risk of being scratched or cut as in the prior art, and if the fruit is packaged by the present invention, Powdered articles such as beverages and milk powder. When the powdered food in the can is close to the sputum, it is difficult to use the measuring spoon to pour out the powder. The powder in the can is completely dumped and does not remain inside the can. There is also no difficulty in recycling the can; in addition, the present invention only needs to use three components to form a can body for sealing packaging, and the existing can body needs to utilize four component combinations, and the invention is more in manufacturing and assembly. simple.

 Further, by adopting the formation of the ring wall 14 and the bead 16 described above, it is possible to prevent the top end of the can body 10 from forming a sharp edge, thereby improving safety.

 The second embodiment of the present invention is modified according to the foregoing first embodiment. Referring to FIG. 7, the cover sheet 40 of the second embodiment of the present invention is provided with a lug 42 on the outer edge, and the tab 42 is folded over. The top edge of the cover sheet 40, according to FIG. 8, when the cover sheet 40 is unsealed, the user can easily remove the puller 42 by pulling the pull tab 42 Cover sheet 40 for improving the convenience of unsealing the can.

 Referring to Figure 9, the assembly process of the can body 10 and the cover sheet 40 of the present invention mainly comprises the following steps:

 1. Positioning: Position the formed can body 10 on the conveyor belt, and use the conveyor belt to transport the can body 10 through mechanical equipment to facilitate assembly.

 2. Whole can shape: The shape of the can body 10 is trimmed so that the can body 10 is in a true round state.

 3. Aluminum cutting pre-welding: an aluminum foil having a shape in which the tab 42 is pre-cut and pressed in the form of a cover sheet 40 is placed at the joint 12 of the can body 10, and the aluminum foil is attached with a gel surface and The surface of the ring 12 is attached, and then the aluminum foil forming cover sheet 40 is cut around the outer periphery of the connecting ring 12, and the cover sheet 40 and the connecting ring 12 are pre-welded so that the two are passed through each other. The points are connected, and the cover sheet 40 is positioned at the top edge of the ring 12 as described.

 4. Welding: further welding the cover sheet 40 to the entire circumference of the ring 12, so that the cover sheet 40 is tightly engaged with the ring 12, and the high temperature of the welding causes the cover sheet 40 to The joints 12 are bonded by a glue using the surface of the aluminum foil.

 5. Full pull ear: Finishing the lug 42, the lug 42 protruding from the outer edge of the cover sheet 40 is folded toward the top edge of the cover sheet 40.

 6. Brass: The lugs 42 are spliced so that they are positioned at the top edge of the cover sheet 40.

After the foregoing steps, the combination of the cover sheet 40 and the can body 10 is completed. At this time, the bottom end of the can body 10 is not assembled with the base 20 and is opened, and then the step of measuring the withstand voltage can be performed; Said The air inside the can body 10 causes the inside of the can body 10 to form a negative pressure state, and detects whether the cover sheet 40 is in close contact with the ring 12 in the state of the cover sheet 40, and Whether or not the cover sheet 40 can be kept from being deformed into the interior of the can body 10; after passing the test, the contents of the can body 10 can be filled with various contents, and after the filling is completed, the assembly work of the base 20 is started.

 The above description is intended to be illustrative, and not restrictive, and many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention. All are intended to fall within the scope of the claims of the invention.

Claims

Rights request  A can body structure, comprising: a can body, a base and a cover sheet, wherein the can body is a tubular body formed by stamping and winding a metal plate piece, and the base is sealed a disc body disposed at a bottom end of the can body, the top end of the can body is outwardly expanded to form a ring, the cover sheet is a sheet made of aluminum foil, and the cover sheet is attached to the The top edge of the ring is closed to close the inner space of the tank.  2. A can body structure according to claim 1, wherein: said cover sheet is provided with a pull ear on the outer edge.  3. A can body structure according to claim 2, wherein: said pull tab is folded over said top edge of said cover sheet.  4. The can body structure according to claim 1, wherein: the outer circumference of the ring forms a ring wall, and the end of the ring wall is rolled outward to form a bead.