CN219645476U

CN219645476U - Plastic cup cover

Info

Publication number: CN219645476U
Application number: CN202321254358.8U
Authority: CN
Inventors: 魏良
Original assignee: Zhejiang Haers Vacuum Containers Co Ltd
Current assignee: Zhejiang Haers Vacuum Containers Co Ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-09-08
Anticipated expiration: 2033-05-23

Abstract

The utility model discloses a plastic cup cover which is simple in structure, firm in connection, good in sealing performance and wide in applicability; the plastic sealing device comprises an upper cover and a lower cover, wherein a steel ring is clamped between the contact end surfaces of the upper cover and the lower cover, and a sealing part is formed by solidifying a molten plastic material in a high-frequency welding mode to realize sealing connection and fixation.

Description

Plastic cup cover

Technical Field

The utility model belongs to the technical field of water cups, and particularly relates to a plastic cup cover.

Background

The existing plastic cup cover is composed of a plurality of parts, and all the parts are generally fastened by a buckle or a screw or fixed by rotary friction welding; however, the fastening strength of the fastening connection between the two parts is not large, so that the connection is not tight enough, the interlayer is easy to enter water, and long-term retained water can be putrefactive and smelly, so that the health of a human body is affected; in the scheme of screw fastening, as the plastic material for food contact for the cup cover is generally softer, the screw is easy to slide in the process of screwing down the screw and loose in the later period, after the screw is disassembled, the screw of the screw hole of the cup cover is damaged and is generally not supported for reinstallation, in addition, the structure is not simple enough through screw fastening, holes are needed, the condition that the screw is exposed exists, and the appearance is not attractive; the application range of the rotary friction welding is narrow, only welding of a single part between two parts is supported, the two parts are all required to be of a rotary structure, and in addition, the rotary friction between the two parts is required in the processing process, so that plastic scraps left after friction can be generated.

Disclosure of Invention

The utility model aims to provide the plastic cup cover which is simple in structure, firm in connection, good in sealing performance and wide in applicability.

In order to achieve the above purpose, the present utility model adopts the following technical scheme.

A plastic cup cover comprises an upper cover and a lower cover, wherein a steel ring is clamped between the contact end surfaces of the upper cover and the lower cover, and a sealing part is formed by solidifying a molten plastic material in a high-frequency welding mode to realize sealing connection and fixation.

By adopting the technical scheme, through pressing from both sides the steel ring between upper cover and lower cover, can heat the steel ring rapidly through high frequency welding and come the nearby plastic material of melting, the purpose of fixed connection upper cover and lower cover can be realized to the sealing that forms after the plastic material is cooled down again, and sealing has sealed effect simultaneously, and this kind of simple structure, firm in connection, leakproofness are good, machining efficiency is high, is applicable to between the spare part of any two plastic materials that need fixed connection, and extensive applicability can solve the problem that prior art exists.

Preferably, the lower end of the upper cover is provided with a first annular groove, the lower cover is correspondingly provided with a convex rib, the steel ring is arranged between the first annular groove and the convex rib, and the molten plastic material fills a first gap between the first annular groove and the convex rib and forms a sealing part.

By adopting the technical scheme, the steel ring is convenient to place and fix by the cooperation of the first groove and the convex rib, and the molten plastic material is also provided with a first gap for accommodating and forming the sealing part.

Preferably, the outer side of the convex rib is provided with an outer edge, the outer side of the first annular groove is provided with a second step, and the outer end of the outer edge is in interference limit with the second step and is used for forming a first gap between the first annular groove and the convex rib.

By adopting the technical scheme, the outer edge and the second step are arranged to be in limit fit, so that the space of the first gap can be ensured, and the molten plastic material is ensured to be accommodated in the space.

Preferably, the upper cover is further provided with a first step between the first annular groove and the second step, a second gap is arranged between the first step and the inner end of the outer edge, and the second gap is used for accommodating solidification of molten plastic material in a complementary manner to form a sealing part.

By adopting the technical scheme, the second gap is formed between the first step and the outer edge, so that molten plastic materials can be further ensured to be contained by the space, and insufficient overflow of the space for containing the plastic materials is avoided.

Preferably, the top of the upper cover is provided with a water drinking port which is penetrated up and down, and the outer side of the lower port of the water drinking port is provided with a second annular groove; a sealing ring made of elastic material is arranged in the second ring groove; the lower cover is correspondingly communicated with the water drinking port and is provided with a water outlet pipe which is penetrated up and down, the wall thickness of the water outlet pipe is larger than that of the lower port of the water drinking port, and the inner wall of the water outlet pipe can be flush with the inner wall of the water drinking port; the upper end face of the water outlet pipe is abutted against and extrudes the sealing ring to form a seal.

By adopting the technical scheme, the drinking water port is arranged, so that direct drinking water is facilitated, and the system is more humanized; the sealing ring is arranged in the second annular groove at the outer side of the water drinking port, the wall thickness of the water outlet pipe is set to be larger than the lower end of the water drinking port, the inner wall of the water outlet pipe is enabled to be flush with the inner wall of the water drinking port, and the upper end of the water outlet pipe can be contacted with the extrusion sealing ring to form sealing.

Preferably, a convex ring is arranged at the position of the upper end surface of the water outlet pipe, which corresponds to the sealing ring.

By adopting the technical scheme, the convex ring is arranged, so that the convex ring can further extrude the sealing ring, the contact surface between the water outlet pipe and the sealing ring is increased, and the tightness is further ensured.

Preferably, the upper surface of the sealing ring is provided with an inner convex wall and an outer convex wall from inside to outside, a groove is formed between the inner convex wall and the outer convex wall, and the inner convex wall and the outer convex wall respectively collide with the bottom surface of the second annular groove and respectively form a first water sealing part and a second water sealing part.

By adopting the technical scheme, the upper surface of the sealing ring is provided with the inner convex wall and the outer convex wall, so that two waterproof layers can be formed with the bottom surface of the second annular groove, and the sealing performance is stronger.

Preferably, a filter frame is arranged at the lower port of the water outlet pipe and used for preventing solid soaked matters in the water cup from pouring out, and the filter frame is provided with water Kong Gongshui to flow through.

By adopting the technical scheme, by arranging the filter frame, the soaked objects such as tea making or fruit soaking can be prevented from flowing out of the water drinking port, so that drinking water is ensured to flow out only.

Compared with the prior art, the utility model has the beneficial effects that: by adopting the technical scheme, through pressing from both sides the steel ring between upper cover and lower cover, can heat the steel ring rapidly through high frequency welding and come the nearby plastic material of melting, the purpose of fixed connection upper cover and lower cover can be realized to the sealing that forms after the plastic material is cooled down again, and sealing has sealed effect simultaneously, and this kind of simple structure, firm in connection, leakproofness are good, machining efficiency is high, is applicable to between the spare part of any two plastic materials that need fixed connection, and extensive applicability can solve the problem that prior art exists.

Drawings

Fig. 1 is a schematic perspective exploded view of the cap of the present utility model.

FIG. 2 is a schematic cross-sectional view of the lid of the present utility model after high frequency welding and an enlarged view of section A.

FIG. 3 is a schematic cross-sectional view of the lid of the present utility model prior to high frequency welding and an enlarged view of section B.

Fig. 4 is a schematic cross-sectional structure of the upper cover.

Fig. 5 is a schematic cross-sectional structure of the lower cover.

Fig. 6 is a schematic cross-sectional view of the seal ring.

Description of the embodiments

In order to make the technical scheme of the present utility model clearer, the present utility model will be described in detail with reference to fig. 1 to 6. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

A plastic cup cover, as shown in figures 1-3, comprises an upper cover 1 and a lower cover 2, wherein a steel ring 3 is clamped between the contact end surfaces of the upper cover 1 and the lower cover 2, and the upper cover and the lower cover are connected and fixed in a high-frequency welding mode.

As shown in fig. 2-5, the lower surface of the upper cover 1 is provided with a first annular groove 11, and the lower cover 2 is correspondingly provided with a convex rib 21; the steel ring 3 is clamped between the first annular groove 11 and the convex rib 21; of course, the first ring groove 11 may also be disposed on the lower cover 2, and the upper cover 1 is correspondingly disposed with the ribs 21. A first gap is arranged between the first annular groove 11 and the ribs 21, as shown in fig. 2, and after the gap is filled with high-frequency welding molten plastic material and solidified, a sealing part 4 is formed, so that the upper cover 1 and the lower cover 2 are fixedly connected, and the sealing part 4 seals the gap between the upper cover 1 and the lower cover 2 at the same time, thereby preventing water from entering.

As shown in fig. 2-5, the first ring groove 11 is outwardly provided with a first step 12 and a second step 13 in sequence, the outer side of the convex rib 21 is correspondingly provided with an outer edge 22, the outer end of the outer edge 22 is in contact limit with the second step 13, a second gap is arranged between the outer edge 22 and the first step 12, and the second gap can also be used for accommodating molten plastic materials, so that the problem caused by insufficient space of the first gap to completely accommodate the molten plastic materials can be prevented; the second step 13 cooperates with the outer edge 22 to ensure the space of the first gap and the second gap.

As shown in fig. 1-6, the top of the upper cover 1 is provided with a water drinking port 15 which is penetrated up and down, and the outer side of the lower port of the water drinking port 15 is provided with a second annular groove 14; a sealing ring 5 made of elastic material is arranged in the second annular groove 14, and the specific material can be a silica gel material for food contact; the lower cover 2 is correspondingly communicated with the water drinking port 15 and is provided with a water outlet pipe 23 which is vertically communicated, the wall thickness of the water outlet pipe 23 is larger than that of the lower port of the water drinking port 15, and the inner wall of the water outlet pipe 23 can be flush with the inner wall of the water drinking port 15; the upper end surface of the water outlet pipe 23 is abutted against and extrudes the sealing ring 5 to form a seal, so that water can be prevented from entering from the joint between the water drinking port 15 and the water outlet pipe 23.

As shown in fig. 6, the upper end surface of the water outlet pipe 23 is provided with a convex ring 24 which is convex upwards at the position corresponding to the sealing ring 5, so that the water outlet pipe can be in closer contact with the sealing ring 5, and the sealing performance is better.

As shown in fig. 6, the upper surface of the sealing ring 5 is provided with an inner convex wall 51 and an outer convex wall 52 from inside to outside, a groove is formed between the inner convex wall 51 and the outer convex wall 52, the inner convex wall 51 and the outer convex wall 52 respectively collide with the bottom surface of the second ring groove 14 and respectively form a first water sealing part and a second water sealing part, and the sealing ring has two water sealing settings, so that the waterproof effect is better.

As shown in fig. 1 or 5, the lower port of the water outlet pipe 23 is provided with a filter frame 6 for preventing the solid soaked matters in the water cup from pouring out, the filter frame 6 is provided with a water passing Kong Gongshui flow through, and the filter frame 6 and the lower cover 2 can be integrally formed or can be arranged into a detachable structure.

The assembling method of the plastic cup cover comprises the following steps:

s1: the upper cover 1 is inverted, a steel ring 3 is taken and placed in the first annular groove 11;

s2: inverting the lower cover 2, aligning the convex ribs 21 with the first annular groove 11, and then placing the convex ribs on the upper cover 1 to form a preliminary assembly;

s3: placing the preliminary assembly into an induction coil of a high-frequency welding machine, enabling the steel ring 3 and the induction coil to be at the same level, and pushing the lower cover 2 by a press to apply force downwards;

s4: starting a high-frequency welding machine, quickly heating the steel ring 3, melting plastic near the steel ring 3, extruding and embedding the steel ring 3 into the first annular groove 11 and the convex rib 21 under the action of a press until the second step 13 is in interference limit with the outer edge 22 to prevent the upper cover 1 and the lower cover 2 from moving in opposite directions, extruding the melted plastic by the steel ring 3, filling the melted plastic into the first gap and the second gap, and solidifying to form the sealing part 4.

For the cup cover with the water drinking port 15, in the step S1, the sealing ring 5 is required to be placed in the second annular groove 14, and for the sealing ring 5 with the inner convex wall 51 and the outer convex wall 52 on the upper surface, the upper surface of the sealing ring is required to face the bottom surface of the second annular groove 14 so as to form two sealing water; correspondingly, in the step S2, the water outlet pipe 23 and the water drinking port 15 are required to be aligned; further, in the steps S3 and S4, when the press presses against the lower cover 2 and applies a downward force, the convex ring 24 on the lower cover 2 can press the lower surface of the sealing ring 5 inwards, and a better seal can be formed after the welding is completed.

Taking a steel ring 3 with a section diameter of 1.2mm as an example, the distance between the first gap and the second gap for containing the molten plastic material is set to be 0.5mm; in the step S4, the equipment parameter of the high-frequency welding machine is power 5KW, the oscillation frequency is set to 40KHZ, the heating time is set to 2S, and the heat preservation time is set to 3S.

Claims

1. The utility model provides a plastic bowl cover, includes upper cover (1) and lower cover (2), its characterized in that: the contact end surfaces of the upper cover (1) and the lower cover (2) are fixedly connected in a sealing way through a steel ring (3) in a clamping way and a sealing part (4) is formed by solidifying a molten plastic material in a high-frequency welding way.

2. A cap according to claim 1, wherein: the lower extreme of upper cover (1) is equipped with first annular (11), and lower cover (2) corresponds to be equipped with protruding muscle (21), and steel ring (3) are located between first annular (11) and protruding muscle (21), and the first clearance between first annular (11) and protruding muscle (21) is filled to molten plastic material and is formed sealing portion (4).

3. A plastic cup cover according to claim 2, wherein: the outer side that lies in protruding muscle (21) on lower cover (2) is equipped with outer edge (22), and the outside that lies in first annular (11) on upper cover (1) is equipped with second step (13), and the outer end of outer edge (22) is contradicted spacing with second step (13) for form the first clearance between first annular (11) and protruding muscle (21).

4. A plastic cup lid according to claim 3, wherein: the upper cover (1) is located between the first annular groove (11) and the second step (13) and is also provided with a first step (12), a second gap is arranged between the first step (12) and the inner end of the outer edge (22), and the second gap is used for complementarily accommodating solidification of molten plastic materials to form the sealing part (4).

5. A plastic cup according to any of claims 1-4, wherein: the top of the upper cover (1) is provided with a water drinking port (15) which is penetrated up and down, and the outer side of the lower port of the water drinking port (15) is provided with a second ring groove (14); a sealing ring (5) made of elastic materials is arranged in the second annular groove (14); a water outlet pipe (23) which is vertically communicated with the water drinking port (15) is arranged on the lower cover (2), the wall thickness of the water outlet pipe (23) is larger than that of the lower port of the water drinking port (15), and the inner wall of the water outlet pipe (23) can be flush with the inner wall of the water drinking port (15); the upper end face of the water outlet pipe (23) is abutted against and extrudes the sealing ring (5) to form a seal.

6. The plastic cup cover according to claim 5, wherein: the upper end surface of the water outlet pipe (23) is provided with a convex ring (24) which is convex upwards at the position corresponding to the sealing ring (5).

7. The plastic cup cover according to claim 5, wherein: the upper surface of the sealing ring (5) is provided with an inner convex wall (51) and an outer convex wall (52) from inside to outside, a groove is formed between the inner convex wall (51) and the outer convex wall (52) respectively props against the bottom surface of the second annular groove (14) and respectively forms a first water sealing part and a second water sealing part.

8. The plastic cup cover according to claim 5, wherein: the lower port of the water outlet pipe (23) is provided with a filter frame (6) for preventing solid soaked matters in the water cup from pouring out, and the filter frame (6) is provided with water Kong Gongshui for flowing through.