Metal cover capable of preventing nesting and scratching

Abstract

A metal cover capable of preventing nesting and scratching comprises an arc-shaped body, a cover hook and a conical ring, the arc-shaped body and the cover hook are in transition connection through the conical ring, the conical ring is in a circular truncated cone shape, the diameter of the conical ring is gradually increased from one side of the arc-shaped body to one side of the cover hook, and when a plurality of metal covers are nesting, adjacent metal covers abut against each other through the ring face of the conical ring. The abutting area between the adjacent metal covers is increased when the metal covers are nested, so that it is guaranteed that the position relation between the adjacent metal covers after nesting is more stable, and the situation that the surfaces of the metal covers are scratched due to mutual movement of the metal covers is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of metal cap technology, specifically relating to a metal cap that prevents scratches from overlapping. Background Technology

[0002] In the manufacturing process of cans, the prefabrication of metal lids is often involved. To facilitate connection with the can body, lid hooks are often provided on the edges of the metal lids. The can body is formed by overlapping the lid hooks with the edges of the can body. Currently, the main structure of metal lids on the market consists of a lid body and a lid hook. The connection between the lid hook and the lid body is rounded. During the stacking and transportation of metal lids, the rounded corner of the upper metal lid abuts against the lid hook of the lower metal lid. The contact area between adjacent metal lids is line contact, resulting in poor stacking stability between adjacent metal lids and easy relative sliding. At the same time, because the edges of the metal lids are relatively sharp, during the sliding process between adjacent metal lids, the edge of the lid hook of the upper metal lid will scratch the upper end surface of the lid hook of the lower metal lid, affecting the quality of the metal lid. Summary of the Invention

[0003] To address the above shortcomings, the technical problem to be solved by this utility model is to provide a metal cap that prevents scratches caused by overlapping, in order to prevent scratches from occurring during the overlapping and transportation of metal caps.

[0004] To solve the above technical problems, the technical solution adopted by this utility model is as follows:

[0005] A metal cap designed to prevent scratching of overlapping metal caps is provided, wherein the metal cap has a conical ring in the middle to prevent adjacent metal caps from sliding. When the metal caps are overlapped, the adjacent metal caps abut against each other through the ring surface of the conical ring.

[0006] As a preferred embodiment of this utility model, the cross section of the conical ring is inclined relative to the axis of the metal cover, with an inclination angle of 4°-6°.

[0007] As a preferred embodiment of this utility model, the metal cover includes an arc-shaped body and a cover hook, and the arc-shaped body and the cover hook are connected by a conical ring.

[0008] As a preferred embodiment of this utility model, the outer side of the conical ring is provided with a ring bar, and the outer end face of the ring bar abuts against the inner wall of the conical ring of the adjacent metal cover.

[0009] As a preferred embodiment of this utility model, the cross section of the conical ring is inclined relative to the axis of the metal cover, with an inclination angle of 10°-20°.

[0010] In a preferred embodiment of this utility model, the ring strip is arranged at the bottom of the conical ring.

[0011] As a preferred embodiment of this utility model, the width of the ring bar is one-third of the width of the tapered ring.

[0012] In a preferred embodiment of this invention, the height of the conical ring is greater than the height of the cover hook.

[0013] As a preferred embodiment of this utility model, the edge of the cover hook is provided with a beveled surface.

[0014] In a preferred embodiment of this utility model, the beveled surface is arranged perpendicular to the axis of the metal cover.

[0015] Compared with the prior art, the beneficial effects of this utility model are: (1) When adjacent metal covers are stacked, the conical rings on the adjacent metal covers abut against each other, and the original metal covers are stacked by surface contact instead of by line contact, which increases the positional stability between adjacent metal covers, prevents relative sliding between adjacent metal covers, and thus prevents the edge of the cover hook from scratching the metal cover.

[0016] (2) By controlling the tilting structure of the conical ring, the distance between adjacent cover hooks is increased, thereby preventing the cover hooks from contacting each other, and further preventing the gold metal cover below from being scratched.

[0017] (3) By setting a beveled surface on the edge of the cover hook, the area of ​​the cover hook edge is increased, thereby further preventing the cover hook edge from scratching the metal cover below. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the metal cover in the stacked state of Embodiment 1.

[0019] Figure 2 This is a magnified view of a portion of point A.

[0020] Figure 3 This is a cross-sectional view of the hook at the cover in the case of the metal cover being stacked in Embodiment 2.

[0021] Figure 4 This is a schematic diagram of the metal sheet before the metal cap is stamped in Example 2.

[0022] Reference numerals: 1. Conical ring; 2. Arc-shaped body; 3. Hook; 4. Ring strip; 5. Beveled surface; 6. First arc; 7. Second arc; 8. Groove. Detailed Implementation

[0023] The present invention will now be further described with reference to the accompanying drawings.

[0024] Example 1

[0025] A metal cap designed to prevent scratching from overlapping includes an arc-shaped body 2, a cap hook 3, and a conical ring 1. The arc-shaped body 2 and the cap hook 3 are connected by the conical ring 1. The conical ring 1 is frustum-shaped, and its diameter gradually increases from one side of the arc-shaped body 2 to the side of the cap hook 3. When multiple metal caps are stacked, adjacent metal caps abut against each other through the ring surface of the conical ring 1, increasing the contact area between adjacent metal caps when stacked. This ensures a more stable positional relationship between adjacent metal caps after stacking and prevents the metal caps from moving and causing scratches on the surface of the metal caps.

[0026] The conical ring 1 and the cover hook 3 are connected by a first circular arc 6, and the conical ring 1 and the arc-shaped body 2 are connected by a second circular arc 7, ensuring that the metal cover has a good forming rate.

[0027] In this embodiment, the spacing between the hooks 3 of adjacent metal covers is controlled by controlling the tilt angle of the cross section of the conical ring 1 relative to the axis of the metal cover. The tilt angle between the cross section of the conical ring 1 and the axis of the metal cover is 4°-6°. This ensures that the adjacent metal covers abut against each other through the conical ring 1, while also ensuring that there is a certain gap between the hooks 3 of the adjacent metal covers, thereby preventing collisions between the hooks 3 of the adjacent covers.

[0028] The height of the conical ring 1 is greater than the overall height of the cover hook 3, ensuring that there is a certain gap between the cover hooks 3 when the conical rings 1 of adjacent metal covers abut.

[0029] To prevent the edge of the upper cover hook 3 from scratching the upper end face of the lower cover hook 3 during the stacking process, a beveled surface 5 is provided on the edge of the cover hook 3. In a preferred embodiment, the beveled surface 5 is processed before the metal cover is formed. After the metal cover is stamped, the beveled surface 5 is set perpendicular to the axis of the metal cover. When the metal covers are stacked, the beveled surface 5 abuts against the upper end face of the lower cover hook 3, increasing the contact area between the beveled surface 5 and the cover hook 3, and preventing the lower cover hook 3 from being scratched.

[0030] Example 2

[0031] This embodiment further improves the metal cover based on embodiment one. In order to further increase the spacing between the cover hooks 3 of adjacent metal covers, a ring bar 4 is provided on the outer side of the conical ring 1. The outer end face of the ring bar 4 abuts against the inner wall of the conical ring 1 of the adjacent metal cover. Preferably, the outer side of the ring bar 4 is a planar structure. The spacing between adjacent conical rings 1 is increased by the ring bar, thereby increasing the spacing between the cover hooks 3 when the metal covers are stacked.

[0032] The thickness of the ring 4 is half the thickness of the metal cap. To facilitate the contact between the outer surface of the ring 4 and the inner surface of the conical ring 1 of the adjacent metal cap, in this embodiment, the inclination angle between the cross section of the conical ring 1 and the axis of the metal cap is 10°-20°.

[0033] The ring 4 is positioned at the bottom of the conical ring 1. Preferably, the lower edge of the ring 4 coincides with the connection point between the conical ring 1 and the second arc 7, preventing the ring 4 from affecting the forming of the second arc 7. The width of the ring 4 is one-third of the width of the conical ring 1.

[0034] When metal caps are stacked, a negative pressure zone is easily generated between the arc-shaped bodies 2 of adjacent metal caps, making it difficult to separate the metal caps. To facilitate the separation of the metal caps, multiple grooves 8 are evenly arranged on the ring strip 4, so that air can flow into the negative pressure zone through the grooves 8.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0036] Although this document uses many terms corresponding to the reference numerals in the figures, the possibility of using other terms is not excluded; these terms are used only to more conveniently describe and explain the essence of this utility model; interpreting them as any kind of additional limitation would be contrary to the spirit of this utility model.

Claims

1. A metal cap designed to prevent scratching of overlapping metal caps, characterized in that, The metal cover is provided with a conical ring (1) in the middle to prevent adjacent metal covers from sliding. When the metal covers are stacked, the adjacent metal covers abut against each other through the ring surface of the conical ring (1) to increase the stacking abutment area of ​​the metal covers. The outer side of the conical ring (1) is provided with a ring bar (4), and the outer end face of the ring bar (4) abuts against the inner wall of the conical ring (1) of the adjacent metal cover.

2. The anti-scratching metal cap according to claim 1, characterized in that, The cross section of the conical ring (1) is inclined relative to the axis of the metal cover, with an inclination angle of 4°-6°.

3. The anti-scratching metal cap according to claim 1, characterized in that, The metal cover includes an arc-shaped body (2) and a cover hook (3), which are connected by a conical ring (1).

4. A metal cap for preventing scratching from overlapping as described in claim 1, characterized in that, The cross section of the conical ring (1) is inclined relative to the axis of the metal cover, with an inclination angle of 10°-20°.

5. A metal cap for preventing overlapping and scratching according to claim 1, characterized in that, The ring (4) is arranged at the bottom of the conical ring (1).

6. A metal cap for preventing overlapping and scratching according to claim 1, characterized in that, The width of the ring (4) is one-third of the width of the conical ring (1).

7. A metal cap for preventing overlapping and scratching according to claim 1, characterized in that, The height of the conical ring (1) is greater than the height of the cover hook (3).

8. A metal cap for preventing overlapping and scratching according to claim 1, characterized in that, The edge of the metal cover is provided with a beveled surface (5).

9. A metal cap for preventing overlapping and scratching according to claim 8, characterized in that, The oblique surface (5) is set perpendicular to the axis of the metal cover.

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