CN213972520U

CN213972520U - Fixing structure for external parts of hollow body

Info

Publication number: CN213972520U
Application number: CN202022669210.3U
Authority: CN
Inventors: 姜林; 高德俊; 葛学继; 张超
Original assignee: Yapp Automotive Parts Co Ltd
Current assignee: Yapp Automotive Parts Co Ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-08-17
Anticipated expiration: 2030-11-18

Abstract

The utility model relates to a fixing structure for external parts of a hollow body, which comprises a hollow body, wherein an insert is arranged at least on the side surface of the hollow body, and the position between the outer surface of the insert and the outer surface of the side wall of the adjacent hollow body does not harm the demoulding of a blow mould of the hollow body; the outer end face of the insert is in the same plane as the outer surface of the adjacent side wall of the hollow body. This technical scheme passes through the design of inserts structure, can solve the drawing of patterns problem of blow molding side inserts after the blow molding is accomplished, can effectively guarantee the inserts and blow the joint strength between the goods wall to can not cause big adverse effect to the wall thickness of blow molding, and this inserts structure also can regard as to blow the positive part of goods and use.

Description

Fixing structure for external parts of hollow body

Technical Field

The utility model belongs to the technical field of the cavity blowing, especially indicate an external part fixed knot of hollow body constructs.

Background

In the existing plastic hollow blow-molded product processing (hereinafter referred to as blow-molded product) industry, for the functional requirements of products, external parts are usually arranged on the outer surface of the blow-molded product, and are mainly used for connecting or mounting some other functional accessories. The parts can be processed in a welding mode after the blow molding process is finished; it is also possible to put a part (such a part is hereinafter collectively referred to as an insert) into a mold cavity in advance in a blow molding process, as in the insert structure of fig. 1 below, and a blow molding method of heat-melting the insert 03 by means of a high-temperature preform in the blow molding process, but the latter method has a limitation, for example, if the insert 03 on the surface of a product is designed on the side of the blow molded article 01, that is, on the surface where the insert mounting surface coincides with or is close to the mold opening direction of the mold, the product may not be released after the blow molding is completed, because the insert 03 interferes with the mold 02 in the mold opening process.

Therefore, the existing insert structure design is generally only suitable for being installed at the front position of a cavity, namely the installation surface is vertical or nearly vertical to the mold opening direction of a mold, otherwise, a manipulator is inconvenient to install the insert under the automatic production condition; and the existing insert structure protrudes out of the surface of the vertical surface, so that the product cannot be demoulded.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an external part fixed knot of hollow body constructs to solve the drawing of patterns problem of blowing goods side inserts after the blowing is accomplished.

The utility model discloses a realize through following technical scheme:

the fixing structure for the external parts of the hollow body comprises the hollow body, wherein an insert is arranged at least on the side surface of the hollow body, and the position between the outer end surface of the insert and the outer surface of the side wall of the adjacent hollow body does not harm the demolding of a blow mold of the hollow body.

Preferably, the outer end face of the insert is in the same plane as the outer surface of the side wall of the adjacent hollow body.

Preferably, the insert has an axial cross section resembling a frustum, trapezoid or hemisphere, and the edges at the top and bottom of the insert are provided with a radius or chamfer.

Preferably, at least one annular groove structure is arranged on the side surface of the insert.

Preferably, the groove depth of the annular groove structure is 0.5-2mm, and the width is 0.5-5 mm.

Preferably, the outer end face of the insert is provided with a mounting hole or an inverted structure.

Preferably, a radially extending annular closing surface is provided at the periphery of the outer end surface of the insert.

The utility model has the advantages that:

this technical scheme passes through the design of inserts structure, can solve the drawing of patterns problem of blow molding side inserts after the blow molding is accomplished, can effectively guarantee the inserts and blow the joint strength between the goods wall to can not cause big adverse effect to the wall thickness of blow molding, and this inserts structure also can regard as to blow the positive part of goods and use.

Drawings

FIG. 1 is a schematic view of a prior art blow molding process;

FIG. 2 is a schematic view of the fixing structure of the external hollow parts of the present invention;

FIG. 3 is a schematic view of an insert configuration;

fig. 4 is an axial cross-sectional view of the insert.

Description of the reference numerals

01. Blow molded article, 02, mold, 03, insert, 1, hollow body, 2, insert, 21, groove structure, 22, mounting hole, 23, top, 24, outer end face, 25, annular sealing face.

Detailed Description

The technical solutions of the present invention are described in detail below by way of examples, which are only exemplary and can be used only for explaining and explaining the technical solutions of the present invention, but should not be construed as limiting the technical solutions of the present invention.

As shown in fig. 2 to 4, the present application provides a fixing structure for external parts of a hollow body, which comprises a hollow body 1, in this embodiment, the hollow body is a plastic product, generally a plastic hollow body prepared by a blow molding process, in the technical scheme of the present application, the plastic material of the hollow body is not limited, and all the components that can be used for preparing the plastic hollow body in the prior art are suitable for the technical scheme of the present application.

The side of the hollow body is provided with the inserts 2, in the solution of the present application, the number of inserts is not limited and is set according to the requirements of the hollow body, and in other embodiments of the present application, the inserts can be provided not only on the side of the hollow body, but also on the front or other surfaces of the hollow body. Therefore, the insert of the technical scheme is designed to be of an inward-concave structure, and the outer end surface 24 of the insert is flush with the outer surface of the side wall of the adjacent hollow body, namely in the same plane, so that the problem of demolding is solved.

As shown in fig. 3 and 4, the axial section of the insert is shaped like a frustum, trapezoid or hemisphere, or other shapes that can be used, and the edges of the top 23 and the bottom of the insert are provided with a rounding or chamfer, which is beneficial to the wall thickness stretching of the blow-molded body during the blow-molding process, and avoids the problem that the local side wall is too thin due to the excessive stretching of the blank of the hollow body.

The material of the inserts of this application is metal material or non-metal material, and among the prior art, the material that is used for the inserts also all is applicable to the preparation of the inserts of this application. In the technical scheme of the application, one end in contact with the outer surface of the side wall of the hollow body is the top of the insert, and the end opposite to the top is the outer end face.

At least one annular groove structure 21 is arranged on the side surface of the insert, the depth of the groove is 0.5-2mm, the width of the groove is 0.5-5mm, part of blanks of the hollow body enter the groove structure in the blow molding process, and the structure can ensure the connection strength between the insert and the side wall of the hollow body.

And mounting holes 22 or structures such as reverse dial structures are arranged on the outer end faces of the inserts and the outer surfaces of the side walls of the hollow body, so that the inserts and the hollow body can be conveniently connected with other system accessories.

The periphery of the outer end face of the insert is provided with a radially extending annular sealing surface 25 for sealing against the hollow body, on which the part can be fixed by means of vacuum suction when the insert is introduced into the mould, which annular sealing surface can be used for sealing in the process.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The fixing structure for the externally-arranged parts of the hollow body is characterized by comprising the hollow body, wherein an insert is arranged at least on the side surface of the hollow body, and the position between the outer end surface of the insert and the outer surface of the side wall of the adjacent hollow body does not harm the demolding of a blow molding mold of the hollow body;

the axial section of the insert is similar to a frustum, trapezoid or hemisphere, and rounded or chamfered edges are arranged at the top and the bottom of the insert;

at least one annular groove structure is arranged on the side surface of the insert.

2. The hollow body external component fixing structure according to claim 1, wherein the outer end face of the insert is in the same plane as the outer surface of the side wall of the adjacent hollow body.

3. The hollow external component fixing structure according to claim 1, wherein the groove depth of the annular groove structure is 0.5-2mm, and the width is 0.5-5 mm.

4. The hollow external part fixing structure is characterized in that the outer end face of the insert is provided with a mounting hole or an inverted structure.

5. The hollow external part fixing structure according to claim 2, wherein a radially extending annular closing surface is provided on a periphery of an outer end surface of the insert.