Tank cover
By designing protrusions at the connection between the lid plate and the ring wall, the efficiency and yield problems in the manufacturing and automated assembly of can lids were solved, enabling stable assembly and efficient production of can lids.
Patent Information
- Application Number
- CN202520221241.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-02-12
AI Technical Summary
Existing can lids are prone to low efficiency and low yield during manufacturing and automated assembly due to overlapping and deformation at the joints.
A protrusion is designed at the connection between the lid plate and the ring wall of the can to enhance the connection structure, prevent overlap and form a barrier to facilitate mechanical gripping, improve manufacturing yield and automated assembly efficiency.
The bump design prevents can lid deformation and overlap, improves manufacturing yield and automated assembly efficiency, and ensures that can lids are not easily misaligned and detached from the container when tightly arranged.
Smart Images
Figure CN223812898U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a can lid, especially relates to a can lid capable of improving the efficiency and yield of automatic assembly. BACKGROUND
[0002] The known can lid is used for sealing a container, which can be a common metal can, a plastic can or the like, and is combined with the opening of the container to prevent the contents in the container from leaking out of the opening of the container. The existing can lid comprises a cover plate and a ring wall connected to the periphery of the cover plate.
[0003] The process of manufacturing a container with a can lid usually adopts the injection molding technology to manufacture the can lid, and then the finished can lid is conveyed through a conveying belt and assembled to the container by a machine. However, because a large number of can lids are placed on the conveying belt at the same time, the adjacent can lids are easily overlapped with each other during the conveying process. At this time, because the periphery of one can lid is shielded by the periphery of another can lid, the machine cannot successfully obtain the lower can lid, which reduces the efficiency of automatic assembly. In addition, because the connection between the cover plate and the ring wall is relatively weak, the connection between the cover plate and the ring wall is easily deformed when the can lid is ejected from the mold during the manufacturing process of the plastic injection molding of the can lid, which reduces the yield of the manufactured can lid.
[0004] As shown in Figure 1 and Figure 2 , the existing can lid 100' comprises a cover plate 10', which comprises a convex part 11', a peripheral surface 12' and a ring wall 13'. The peripheral surface 12' is formed between the convex part 11' and the ring wall 13'. After the can lid 100' is assembled on a container 1 and a plurality of containers 1 with the can lid 100' are packaged by a packaging material, for example, by a shrink film packaging, the plurality of containers 1 with the can lid 100' are tightly arranged by being squeezed by the packaging material. If the can lid 100' and another can lid 100' adjacent thereto are in a misaligned state, at this time, part of the ring wall 13' is located above another peripheral surface 12'. The peripheral surface 12' of the lower another can lid 100' is easily pushed up the ring wall 13' above, which makes the can lid 100' above move upward or even separate from the container 1.
[0005] Therefore, how to provide a can lid capable of improving the efficiency and yield of automatic assembly is a problem to be solved urgently. UTILITY MODEL CONTENTS
[0006] Therefore, the purpose of the present application is to provide a can lid, which strengthens the structure of the connection between the cover plate and the ring wall through the protrusions, and forms a barrier to prevent the can lids from being easily overlapped.
[0007] To achieve the above purpose, the present application provides a can lid, which comprises a cover body and at least one protrusion, wherein the ring wall is connected to the periphery of the cover plate and extends downward from the periphery of the cover plate; and the at least one protrusion is connected to the periphery of the cover plate and extends upward from the periphery of the cover plate in a direction away from the ring wall.
[0008] The effect of the present application is that the design of the at least one protrusion of the can lid can strengthen the structure of the connection between the cover plate and the ring wall, avoid deformation caused by the force during the manufacturing process of the can lid, improve the manufacturing yield of the can lid, form a barrier to prevent the can lid from being easily overlapped with another can lid, make it easier for a machine to obtain the can lid on the conveyor belt, thereby improving the efficiency of automatic assembly, and when the plurality of can lids are closely arranged, if the can lid and the adjacent another can lid are in an up-down misaligned state, the can lid is also not easily pushed upward by the adjacent can lid. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 is a schematic view of a prior art can lid and container.
[0010] Figure 2 is a schematic view of a prior art can lid and container.
[0011] Figure 3 is a can lid and a plan view of the first preferred embodiment of the present application.
[0012] Figure 4 is a front view of the can lid of the first preferred embodiment of the present application.
[0013] Figure 5 is a plan view of the can lid of another preferred embodiment of the present application.
[0014] Figure 6 is a plan view of the can lid of the second preferred embodiment of the present application.
[0015] Figure 7 is a front view of the can lid of the second preferred embodiment of the present application.
[0016] Figure 8 is a front view of the can lid of the third preferred embodiment of the present application.
[0017] BRIEF DESCRIPTION OF DRAWINGS
[0018] 100', 100, 200, 300: can lid
[0019] 10, 30, 50: cover body
[0020] 10', 11, 31, 51: cover plate
[0021] 11', 311: protruding portion
[0022] 311a, 511: top surface of protruding portion
[0023] 312: ring portion
[0024] 312a: top surface of ring portion
[0025] 13', 12, 32, 52: ring wall
[0026] 121, 321, 521: bottom surface of ring wall
[0027] 12', 512: peripheral surface
[0028] 20, 40, 60: protruding block
[0029] 21, 41, 61: top surface of protruding block
[0030] H1: first height
[0031] H2: second height
[0032] H3: third height
[0033] H4: fourth height
[0034] H5: fifth height
[0035] H6: sixth height
[0036] L: central axis
[0037] S: space
[0038] 1: container DETAILED DESCRIPTION
[0039] To make the present application clearer, preferred embodiments will be described in detail below with reference to the drawings. Please refer to the drawings as follows: Figure 3 and Figure 4 The can lid 100 of the first preferred embodiment of the present application is shown in the drawings, which is used to seal an opening (not shown in the drawings) of a container, and comprises a cover body 10 and at least one protruding block 20. In this embodiment, the can lid 100 is manufactured by the technology of injection molding, and the shape of the can lid 100 is exemplified as a circle. In other embodiments, the shape of the can lid 100 can also be a rectangle or other shapes.
[0040] The cover 10 includes a cover plate 11 and an annular wall 12. The cover plate 11 is a plate, and the annular wall 12 is connected to the periphery of the cover plate 11 and is formed by extending downward from the periphery of the cover plate 11.
[0041] In this embodiment, the number of at least one protrusion 20 is one. The protrusion 20 is connected to and surrounds the periphery of the cover plate 11. The protrusion 20 extends upward from the periphery of the cover plate 11 in a direction away from the annular wall 12. The protrusion 20 has a top surface 21, and the annular wall 12 has a bottom surface 121. The bottom surface 121 of the annular wall 12 and the top surface 21 of the protrusion 20 are vertically corresponding. The protrusion 20 strengthens the structure at the connection between the cover plate 11 and the annular wall 12, preventing deformation of the can lid 100 during manufacturing due to ejection force, thus improving the manufacturing yield of the can lid 100. It also forms a barrier, preventing the can lid 100 from easily overlapping with another can lid 100, making it easier for machinery to pick up the can lid 100 located on the conveyor belt, thereby improving the efficiency of automated assembly.
[0042] like Figure 5 As shown, in another embodiment, the number of the at least one protrusion 20 is two, but not limited thereto. In other embodiments, the number of the at least one protrusion 20 may also be three or more; wherein, the shape of each protrusion 20 is a C-shaped block, but not limited thereto. When the cover 10 is rectangular, each protrusion 20 may also be a U-shaped or other shape, as long as the shape of each protrusion 20 corresponds to the shape of the periphery of the cover plate 11. The two protrusions 20 surround the opposite sides of the periphery of the cover plate 11, and two gaps S are formed between the ends of the two protrusions 20.
[0043] Please refer to Figure 6 and Figure 7For the second preferred embodiment of the utility model, the central axis L is defined on the tank cover 200, the tank cover 200 includes a cover body 30 and at least one bump 40, the cover body 30 includes a cover plate 31 and a ring wall 32, the middle of the cover plate 31 has a convex part 311 formed by protruding upwards, the convex part 311 has a convex top surface 311a, the circumferential edge of the convex part 311 is connected to the inner circumferential edge of a ring part 312, the outer circumferential edge of the ring part 312 is connected to the ring wall 32, the ring part 312 has a ring top surface 312a, the ring wall 32 is connected to the circumferential edge of the cover plate 31, and the ring wall 32 is formed by extending downwards from the circumferential edge of the cover plate 31, the at least one bump 40 extends upwards from the circumferential edge of the cover plate 31 in a direction away from the ring wall 32, the at least one bump 40 is connected to the outer circumferential edge of the ring part 312, the at least one bump 40 has at least one bump top surface 41, the position of the ring wall bottom surface 321 of the ring wall 32 and the bump top surface 41 of the at least one bump 40 corresponds up and down, wherein the distance between the convex top surface 311a and the outer circumferential edge of the ring top surface 312a along the central axis L has a first height H1, the distance between the ring top surface 312a and the ring wall bottom surface 321 of the ring wall 32 along the central axis L has a second height H2, the distance between the bump top surface 41 of each bump 40 and the ring wall bottom surface 321 of the ring wall 32 along the central axis L has a third height H3, the first height H1 is greater than the second height H2, the third height H3 is greater than 0.5 times the sum of the first height H1 and the second height H2, in this embodiment, the number of the at least one bump 40 is one, but is not limited to this; the ring top surface 312a is a plane (that is, the height of the inner circumferential edge of the ring top surface 312a along the central axis L is the same as the height of the outer circumferential edge of the ring top surface 312a along the central axis L). In other preferred embodiments, the number of the at least one bump 40 can be two or more than two; the ring top surface 312a can be an inclined surface (that is, the height of the inner circumferential edge of the ring top surface 312a along the central axis L is higher or lower than the height of the outer circumferential edge of the ring top surface 312a along the central axis L).
[0044] Please refer to Figure 8For the third preferred embodiment of the utility model, the central axis L is defined in the tank cover 300, the tank cover 300 includes a cover body 50 and at least one bump 60, the cover body 50 includes a cover plate 51 and a ring wall 52, the cover plate 51 of the cover body 50 has a convex top surface 511 and a peripheral surface 512, the height of the convex top surface 511 along the central axis L is higher than the height of the peripheral surface 512 along the central axis L, the peripheral edge of the convex top surface 511 is connected to the inner peripheral edge of the peripheral surface 512, the outer peripheral edge of the peripheral surface 512 is connected to the ring wall 52, in the embodiment, the peripheral surface 512 is an inclined surface, in other embodiments, the cross section of the peripheral surface 512 can be arc-shaped, the ring wall 52 is connected to the peripheral edge of the cover plate 51, and the ring wall 52 is formed by extending downward from the peripheral edge of the cover plate 51, the at least one bump 60 extends upward from the peripheral edge of the cover plate 51 in a direction away from the ring wall 52, the at least one bump 60 is connected to the outer peripheral edge of the peripheral surface 512, the at least one bump 60 has a bump top surface 61, the ring wall bottom surface 521 of the ring wall 52 and the bump top surface 61 of the at least one bump 60 correspond in position, wherein the distance between the convex top surface 511 and the outer peripheral edge of the peripheral surface 512 along the central axis L has a fourth height H4, the distance between the outer peripheral edge of the peripheral surface 512 and the ring wall bottom surface 521 of the ring wall 52 along the central axis L has a fifth height H5, the distance between the bump top surface 61 of each bump 60 and the ring wall bottom surface 521 of the ring wall 52 along the central axis L has a sixth height H6, the fourth height H4 is greater than the fifth height H5, the sixth height H6 is greater than 0.5 times the sum of the fourth height H4 and the fifth height H5, in the embodiment, the number of the at least one bump 60 is one, but it is not limited thereto, in other preferred embodiments, the number of the at least one bump 60 can be two or more than two.
[0045] In summary, by the design of the at least one protrusion of the can lid, the structure of the connection between the cover plate and the ring wall is strengthened, and during the production of the can lid, when the can lid is ejected from the mold in the injection molding process, the force applied to the ejection can not cause the can lid to deform, so as to improve the yield of the can lid. During the conveying of the can lid on the conveying belt, the can lid on the conveying belt is not easily stacked with another can lid, so that the machine can easily obtain the can lid on the conveying belt, thereby improving the efficiency of the automatic assembly of the can lid. In addition, after the can lid is assembled in a container and a plurality of containers with the can lid are packaged by a packaging material, for example, by shrink film packaging, the plurality of containers with the can lid are tightly arranged by being squeezed by the packaging material. If the can lid and the adjacent another can lid are in a misaligned state, at this time, since the ring wall is blocked by the at least one protrusion of the adjacent can lid, the can lid is not easily pushed upward by the adjacent can lid.
[0046] The above merely describes preferred and feasible embodiments of the present application, and equivalent changes made according to the description and claims of the present application should be included in the patent scope of the present application.
Claims
1. A can end characterized by, The can lid comprises: a lid body comprising a lid plate and a ring wall connected to the periphery of the lid plate and extending downward from the periphery of the lid plate; at least one protrusion connected to the periphery of the lid plate and extending upward from the periphery of the lid plate in a direction away from the ring wall.
2. The can lid of claim 1, wherein The lid plate is a plate body, the at least one protrusion comprises two protrusions, each of the protrusions is a C-shaped block, and two gaps are formed between the two protrusions.
3. The can lid of claim 1 wherein, The lid plate has a convex portion formed by a protrusion upward, the periphery of the convex portion is connected to a ring portion, the outer periphery of the ring portion is connected to the ring wall; the convex portion has a convex top surface, and the ring portion has a ring top surface; the at least one protrusion is connected to the periphery of the ring portion.
4. The can lid of claim 3, wherein A central axis is defined in the can lid, the distance between the convex top surface and the outer periphery of the ring top surface along the central axis has a first height, the distance between the ring top surface and the end edge of the ring wall away from the lid body along the central axis has a second height, and the first height is greater than 0.5 times the sum of the first height and the second height.
5. The can lid of claim 4, wherein The distance between each of the protrusions and the end edge of the ring wall away from the lid body along the central axis has a third height, and the third height is greater than 0.5 times the sum of the first height and the second height.
6. The can lid of claim 1 wherein, A central axis is defined in the can lid, the lid plate has a convex top surface and a peripheral surface, the height of the convex top surface along the central axis is higher than the height of the peripheral surface along the central axis, the periphery of the convex top surface is connected to the inner periphery of the peripheral surface, the outer periphery of the peripheral surface is connected to the ring wall, and the at least one protrusion is connected to the outer periphery of the peripheral surface.
7. The can lid of claim 6, wherein The distance between the convex top surface and the outer periphery of the peripheral surface along the central axis has a fourth height, the distance between the outer periphery of the peripheral surface and the end edge of the ring wall away from the lid body along the central axis has a fifth height, and the fourth height is greater than the fifth height.
8. The can lid of claim 7, wherein The distance between each of the protrusions and the end edge of the ring wall away from the lid body along the central axis has a sixth height, and the sixth height is greater than 0.5 times the sum of the fourth height and the fifth height.