Rubber sealing ring of rotational molding packaging box

Abstract

The utility model discloses a rubber sealing ring of a rotational moulding packing box, the rubber sealing ring is composed of a multi-section arc protruding part which is in butt joint fit with a sealing groove of a box cover and a spherical protruding part which is in butt joint fit with a box body, the spherical protruding part adopts a cavity structure, and the multi-section arc protruding part forms a multi-section sealing barrier in the sealing groove of the box cover. The sealing ring designed by the utility model has the advantages that the deformation is large, the rebound resilience is strong, permanent deformation is not easy to generate, the sealing effect can be greatly improved, the connecting structure of the sealing ring and the box door is simple, the assembly is facilitated, and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, in particular to a rubber sealing ring for a rotationally molded packaging box. Background Art

[0002] Currently, packaging boxes produced using the mainstream roto-molding process need to achieve airtight packaging for the products inside, and the sealing design at the junction of the box lid and the box body has become an important issue. Rubber sealing rings are commonly used as seals in various industries, and using rubber sealing rings to ensure the airtightness of packaging boxes is also a very common method. However, the existing rubber sealing rings have a simple structure, are prone to permanent deformation after compression, are not easy to rebound, and have a short service life. They are not suitable for large roto-molded packaging boxes with airtight requirements. This paper proposes a rubber sealing ring suitable for roto-molded packaging boxes, which has the characteristics of not being easy to permanently deform, having a good sealing effect, and a long service life. Utility Model Content

[0003] The purpose of the utility model is to provide a rubber sealing ring for a roto-molded packaging box, which can improve the sealing effect and increase the service life by optimizing the sealing ring structure.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A rubber sealing ring for a roto-molded packaging box consists of two parts: a multi-segment arc protrusion that cooperates with the sealing groove of the box cover and a spherical protrusion that cooperates with the box body. The spherical protrusion adopts a cavity structure, and the multi-segment arc protrusion forms a multi-segment sealing barrier in the sealing groove of the box cover.

[0006] Furthermore, the multi-section arc protrusion portion consists of a first section of arc-shaped protrusions and a second section of arc-shaped protrusions, and the arc radius and arc height of the first section of arc-shaped protrusions and the second section of arc-shaped protrusions are set to be the same.

[0007] Furthermore, a reinforcing rib is provided in the cavity of the spherical protrusion, and the reinforcing rib is provided perpendicular to the contact sealing surface of the box body.

[0008] Furthermore, the sealing ring body is configured as a rectangular ring structure having the same shape as the sealing position of the box body.

[0009] Furthermore, the sealing ring body is formed into a rectangular ring by heat-welding, and the heat-welding position is set on the right-angle side of the rectangular ring.

[0010] To sum up, the utility model has the following beneficial effects: the sealing ring designed by the utility model has a large deformation amount and strong resilience, is not easy to produce permanent deformation, can greatly improve the sealing effect, and the connection structure between the sealing ring and the box door is simple, which is conducive to assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a mating diagram of a silica gel sealing ring with the box cover and the box body;

[0012] Figure 2 It is a cross-sectional view of the silica gel sealing ring;

[0013] Figure 3 It is a structural schematic diagram of silica gel.

[0014] In the figure, 1-1, box cover; 1-2, silica gel sealing ring; 1-3, box body; 2-1, multi-segment arc protrusion; 2-2, spherical protrusion; 3-1, sealing ring main body; 3-2, heat-sealing position. Specific implementation manner

[0015] The following further describes the present utility model in detail with reference to the accompanying drawings. The technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0016] As Figure 1 and Figure 2 shown, a rotational molding packaging box rubber sealing ring, the silica gel sealing ring 1-2 is composed of a multi-segment arc protrusion 2-1 that is butt-jointed and fitted with the sealing groove of the box cover 1-1 and a spherical protrusion 2-2 that is butt-jointed and fitted with the box body 1-3. The spherical protrusion 2-2 adopts a cavity structure, and the deformation amount of the spherical protrusion is the largest. In order to avoid direct deformation caused by long-term pressure on the spherical protrusion, the multi-segment arc protrusion forms a multi-segment sealing barrier in the sealing groove of the box cover 1-1.

[0017] Further, as Figure 2 shown, the multi-segment arc protrusion 2-1 is composed of a first-segment arc protrusion and a second-segment arc protrusion, and the arc radii and arc heights of the first-segment arc protrusion and the second-segment arc protrusion are set to be the same. The number of segments of the multi-segment protrusion 2-1 can be designed according to the actual sealing structure size. At the same time, the multi-segment arc structure design enables the silica gel sealing ring 1-2 not to require a specified use direction, facilitating installation.

[0018] Further, reinforcing ribs are arranged in the cavity of the spherical protrusion 2-2, and the reinforcing ribs are arranged perpendicular to the contact sealing surface of the box body 1-3. By internally arranging the reinforcing ribs to support and strengthen the overall strength of the silicone rubber sealing ring, the compressive performance of the sealing ring is improved.

[0019] Further, as Figure 3As shown, the sealing ring body 3-1 is set as a rectangular ring structure with the same shape as the sealing position of the box body 1-3. It is evenly distributed on the docking surface between the box body and the box cover, which helps the sealing ring to be evenly stressed and improves the service life of the sealing ring.

[0020] Furthermore, the sealing ring body 3-1 is formed into a rectangular ring by means of thermal connection, and the thermal connection position 3-2 is set on the right-angle side of the rectangular ring.

[0021] When the packaging box is about to be sealed, the spherical protrusion 2-2 is significantly deformed due to pressure. When the packaging box reaches the sealed state, the internal tension generated by the spherical protrusion 2-2 due to pressure acts on the box body and the box cover, enabling a completely fitting state between the sealing ring and the box body and the box cover, ensuring the airtightness of the packaging box. When the multi-segment arc protrusions 2-1 sink into the box cover, the evenly arranged arc protrusions ensure uniform force distribution between the silicone sealing ring and the box cover. Moreover, each arc protrusion can be regarded as a sealing barrier, which is beneficial to improving the sealing performance between the box cover and the sealing ring.

[0022] This specific embodiment is only an interpretation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A rubber sealing ring for a rotational molding packing box, characterized in that: It is composed of two parts: a multi-segment arc protrusion (2-1) that is butt-jointed and fitted with the sealing groove of the box cover (1-1), and a spherical protrusion (2-2) that is butt-jointed and fitted with the box body (1-3). The spherical protrusion (2-2) adopts a cavity structure, and the multi-segment arc protrusion forms a multi-segment sealing barrier in the sealing groove of the box cover (1-1).

2. The rubber sealing ring for a rotational molding packing box according to claim 1, wherein: The multi-segment arc protrusion (2-1) is composed of a first-segment arc protrusion and a second-segment arc protrusion, and the arc radii and arc heights of the first-segment arc protrusion and the second-segment arc protrusion are set to be the same.

3. The rubber sealing ring for a rotational molding packaging box according to claim 2, characterized in that: Reinforcing ribs are arranged in the cavity of the spherical protrusion (2-2), and the reinforcing ribs are arranged perpendicular to the contact sealing surface of the box body (1-3).

4. A rotational molding packaging box rubber sealing ring according to claim 3, characterized in that: The sealing ring body (3-1) is set into a rectangular ring structure with the same shape as the sealing position of the box body (1-3).

5. A rotational molding packaging box rubber sealing ring according to claim 4, characterized in that: The sealing ring body (3-1) forms a rectangular ring by means of thermal bonding, and the thermal bonding position (3-2) is set on the right-angle side of the rectangular ring.

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