CN218000387U

CN218000387U - Plastic part sealing structure and forming die thereof

Info

Publication number: CN218000387U
Application number: CN202122020954.7U
Authority: CN
Inventors: 俞益南
Original assignee: Shenzhen Jiangnan Weiye Mould Plastic Co ltd
Current assignee: Shenzhen Jiangnan Weiye Mould Plastic Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-12-09
Anticipated expiration: 2031-08-25

Abstract

The utility model discloses a plastic part seal structure and forming die thereof, seal structure integrated into one piece is in the plastic part, seal structure includes the sealing member, the sealing member includes connecting portion and sealing, connecting portion with plastic part fixed connection, the sealing with connecting portion integrated into one piece extends to a lateral bending, the plastic part passes through the sealing cooperates with corresponding structure is sealed, need not set up the sealing washer alone, can prevent that the sealing member from following break away from on the plastic part to and place the sealing member and burst etc. increase sealed stability.

Description

Plastic part sealing structure and forming die thereof

Technical Field

The utility model relates to a sealed technical field especially relates to a plastic part seal structure and forming die thereof.

Background

When two structural members need to be connected in a sealing manner, a corresponding sealing structure is generally required to be arranged at the connecting position of one structural member or two structural members, so as to realize sealing. At present, most of existing sealing structures are sealed by arranging sealing rings on structural parts and extruding the sealing rings. Set up the sealing washer at that time easily because pressure is too big for the sealing washer warp, drops, bursts even, makes sealed stability relatively poor.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses a plastic part seal structure can promote the sealed stability of plastic part.

The utility model discloses a plastic part seal structure, seal structure integrated into one piece is in the plastic part, seal structure includes the sealing member, the sealing member includes connecting portion and sealing, connecting portion with plastic part fixed connection, the sealing with connecting portion integrated into one piece extends to a lateral bending, the plastic part passes through the sealing cooperates with corresponding structure carries out sealing.

Furthermore, the outer side surface of the sealing part is a sealing surface and is matched and sealed with a structural part through the sealing surface; the inner side of the sealing part is a buffer space.

Furthermore, be provided with the spread groove on the plastic part, connecting portion pass through the spread groove with plastic part fixed connection.

Furthermore, a connecting hole is formed in the connecting groove, and a protruding fixing portion matched with the connecting hole is arranged on the connecting portion.

Further, the sealing member is an annular closing body.

Further, the sealing member is distributed on two different surfaces of the plastic member.

The utility model also discloses a forming die of plastic part seal structure, forming die includes first mold core and second mold core, first mold core with the cooperation of second mold core forms the die cavity, the plastic part is placed in the die cavity, and leave the confession the fashioned shaping space of seal structure.

Furthermore, the forming space is a forming groove arranged on the first mold core and/or the second mold core.

Further, an insert is arranged on the first mold core and/or the second mold core, and a molding surface corresponding to the sealing surface is arranged on the insert; and the first mold core and/or the second mold core are/is provided with a forming bulge for filling the buffer space, and the forming bulge is matched with the forming surface to form the forming groove.

The technical scheme of the utility model, compared with the prior art, beneficial effect is:

by integrally forming the sealing element on the plastic part, the plastic part is sealed with a corresponding structure through the sealing part on the sealing element, a sealing ring is not required to be independently arranged, the sealing element can be prevented from being separated from the plastic part, the sealing element can be prevented from bursting and the like, and the sealing stability is improved; the forming die is used for integrally forming the sealing structure and the sealing piece in a secondary injection molding mode, and the mounting stability of the sealing structure is improved.

Drawings

FIG. 1 is a schematic view of a sealing structure disposed on a plastic part;

FIG. 2 is an exploded view of the sealing member and the plastic member;

FIG. 3 is a cross-sectional view of the seal;

FIG. 4 is a sectional view of a mold for secondary injection molding of a sealing structure to a plastic part;

FIG. 5 is a cross-sectional view of a forming die;

description of the figures

100. A sealing structure; 110. a seal member; 111. a connecting portion; 112. a sealing part; 113. a protrusion fixing portion; 114. a sealing part; 115. a buffer space; 200. a plastic part; 210. connecting grooves; 220. connecting holes; 300. forming a mold; 310. a first mold core; 311. forming a bulge; 320. a second mold core; 330. an insert; 331. molding surface; 340. a cavity; 350. and (5) forming a groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it should be noted that when one component is considered to be "connected" to another component, it may be directly connected to the other component or intervening components may exist. 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 invention belongs. It should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; either mechanically or electrically, and may be internal to both elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

It should be noted that, in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, the utility model discloses a plastic part sealing structure 100, sealing structure 100 integrated into one piece in on the plastic part 200, plastic part 200 passes through sealing structure 100 cooperates with other structure are sealed.

As shown in fig. 2 and 3, the sealing structure 100 includes a sealing member 110, the sealing member 110 includes a connecting portion 111 and a sealing portion 112, the connecting portion 111 is fixedly connected to the plastic member 200, the sealing portion 112 is integrally formed with the connecting portion 111 and extends to be bent to one side, the plastic member 200 is pressed against the structural member by the sealing portion 112, and sealing is performed by the sealing portion 112.

Further, the outer side surface of the sealing part 112 is a sealing surface 114, and is sealed with the structural member by the sealing surface 114 in a matching manner; the inside of the sealing portion 112 is a buffer space 115. When the plastic part 200 needs to be matched with a corresponding structural member, the sealing surface 114 abuts against the structural member, and the sealing portion 114 deforms and is recessed into the buffer space 115.

In this application, connecting portion 111 with plastic part 200 is through the mode injection moulding of secondary moulding plastics, makes connecting portion 111 with plastic part 200 firm in connection can prevent simultaneously plastic part 200 is when other structure sealing fit sealing member 110 is followed drop on the plastic part 200. The sealing member 110 is made of soft plastic material, such as rubber, silica gel, etc.

Further, the plastic part 200 is provided with a connecting groove 210, and the connecting portion 111 is fixedly connected to the plastic part 110 through the connecting groove 210. During injection molding, the molten material enters the connecting groove 210, and is cooled and molded to form the connecting portion 111, and is closely attached to the connecting groove 210.

Further, a connection hole 220 is formed in the connection groove 210, a protrusion fixing portion 113 matched with the connection hole 220 is arranged on the connection portion 111, and the protrusion fixing portion 113 can extend into the connection hole 220, so that connection stability between the connection portion 111 and the connection groove 210 is improved.

The seal 110 is an annular closure. The sealing portion 112 may be bent toward the inner side of the closing body, and may also be bent toward the outer side of the closing body, which is not particularly limited herein.

Further, the sealing members 110 are distributed on two different surfaces of the plastic member 200. The sealing member 110 may be distributed on two different surfaces of the plastic member 200 as needed to seal the positions of the two surfaces to be sealed. If seal through the sealing washer, it is same the sealing washer is installed on two different planes, breaks away from with corresponding plane easily for leakproofness stability is relatively poor.

As shown in fig. 4 and 5, the present invention further discloses a molding mold 300 for molding the sealing structure 100 on the plastic part 200. Specifically, the forming mold 300 includes a first mold core 310 and a second mold core 320, and the first mold core 310 and the second mold core 320 are respectively connected to corresponding mold bases. The first mold core 310 and the second mold core 320 are capable of forming a corresponding cavity 340 when mated. When the sealing structure 100 is subjected to the secondary injection molding on the plastic part 200, the plastic part 200 needs to be placed in the cavity 340, and a molding space for molding the sealing structure 100 is left in the cavity 340. And injecting a plastic material into the cavity 340 through the injection port, filling the molding space, and molding the sealing element 110 after the material is cooled and solidified.

Further, the forming space is a forming groove 350 disposed on the first mold core 310 and/or the second mold core 320. When only one sealing structure 100 is arranged on the plastic part 200, the molding groove 350 is arranged on the first mold core 310 or the second mold core 320; when two sealing structures 100 are disposed on the plastic part 200 and located at two ends of the plastic part 200, the molding grooves 350 are disposed on both the first mold core 310 and the second mold core 320.

Further, an insert 330 is disposed on the first mold core 310 and/or the second mold core 320, and a molding surface 331 corresponding to the sealing surface 114 is disposed on the insert 330; the first mold core 310 and/or the second mold core 320 are/is provided with a forming protrusion 311 for filling the buffer space, and the forming protrusion 311 and the forming surface 331 are matched to form the forming groove 350. When the mold insert 330 is removed from the product after the injection molding of the sealing member 110, the first mold core 310 and the second mold core 320 are separated again.

The present invention can be designed in various embodiments and variations without departing from the broad spirit and scope of the present invention, and the above-described embodiments are used to explain the present invention, but do not limit the scope of the present invention.

Claims

1. The utility model provides a plastic part seal structure, its characterized in that, seal structure integrated into one piece is in the plastic part, seal structure includes the sealing member, the sealing member includes connecting portion and sealing, connecting portion with plastic part fixed connection, the sealing with connecting portion integrated into one piece extends to a lateral bending, the plastic part passes through sealing and corresponding structure carry out sealed cooperation.

2. The sealing structure for plastic parts according to claim 1, wherein the outer side surface of the sealing portion is a sealing surface and is sealed with the structural member by the sealing surface; the inner side of the sealing part is a buffer space.

3. A plastic member sealing structure according to claim 2, wherein said plastic member is provided with a connecting groove, and said connecting portion is fixedly connected to said plastic member through said connecting groove.

4. The sealing structure for plastic parts according to claim 3, wherein a coupling hole is formed in said coupling groove, and said coupling part is provided with a protrusion fixing part engaged with said coupling hole.

5. A plastic part sealing arrangement according to claim 4, wherein said sealing member is an annular closure.

6. A plastic part sealing arrangement according to any one of claims 1 to 5, wherein said sealing means are distributed on two different faces of said plastic part.

7. A mold for molding a sealing structure of a plastic part according to any one of claims 2 to 6, wherein the mold comprises a first mold core and a second mold core, the first mold core and the second mold core cooperate to form a cavity, the plastic part is placed in the cavity, and a molding space for molding the sealing structure is reserved.

8. The mold for forming a sealing structure of a plastic part according to claim 7, wherein the forming space is a forming groove provided at the first mold core and/or the second mold core.

9. The mold for forming a sealing structure of a plastic part according to claim 8, wherein an insert is disposed on the first core and/or the second core, and a forming surface corresponding to the sealing surface is disposed on the insert; and the first mold core and/or the second mold core are/is provided with a forming bulge for filling the buffer space, and the forming bulge is matched with the forming surface to form the forming groove.