CN214214781U

CN214214781U - Hot melt welding assembly structure

Info

Publication number: CN214214781U
Application number: CN202022872289.XU
Authority: CN
Inventors: 陈杰; 李健军
Original assignee: Shanghai Real Industrial Co Ltd
Current assignee: Shanghai Real Industrial Co Ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-09-17
Anticipated expiration: 2030-12-02

Abstract

The utility model relates to a hot melt welding assembly structure, including body and support, one side that the body corresponds the support is equipped with first muscle piece, and the position that the support corresponds first muscle piece is equipped with the notch, and the first muscle piece of body stretches out from the notch of support, and the both sides that one side that the support dorsad the body lies in the notch are equipped with the second muscle piece respectively. The utility model discloses can effectively promote the tensile strength of product hot melt welding back muscle position, improve the stability and the qualification rate of product.

Description

Hot melt welding assembly structure

Technical Field

The utility model belongs to the technical field of the automobile parts production, especially, relate to a hot melt welding assembly structure.

Background

With the development of society, automobiles are more and more popular as a tool for riding instead of walk, the application range of plastic products in automobile interior and exterior ornaments is very wide, and the plastic products are various in style and structure and very important to the integral shape, structure and the like of the automobiles. At present, products such as automobile wheel trim rubbing strips and door guard plate rubbing strips of many brands are made of PP materials, but in order to meet the requirements of the aspects of modeling, structure and the like, more and more products are assembled in a disassembling and welding mode, namely, a support and a body are connected and assembled in a hot melting welding mode.

Taking the automobile wheel arch chafing strip as an example, as shown in fig. 1-3, one side of the wheel arch body corresponding to the bracket is provided with a protruding rib, the protruding rib penetrates through a notch on the bracket, and a welding head of a hot melting die forms a mushroom bag by melting the rib of the body to complete hot melting welding. Due to the fact that the characteristics and tensile strength of the PP material are limited, the rubbing strip welded by the conventional hot-melt welding process generally has the risk of desoldering.

Disclosure of Invention

The utility model aims to solve the technical problem that a hot melt welding assembly structure is provided, can effectively promote the tensile strength of product hot melt welding back muscle position, improve the stability and the qualification rate of product.

The utility model provides a technical scheme that its technical problem adopted provides a hot melt welding assembly structure, including body and support, one side that the body corresponds the support is equipped with first muscle piece, the position that the support corresponds first muscle piece is equipped with the notch, stretch out from the notch of support first muscle piece of body, the both sides that one side of support dorsad body is located the notch are equipped with the second muscle piece respectively.

First muscle piece and body are injection moulding structure as an organic whole.

The second rib piece and the support are of an integral injection molding structure.

The body is an automobile wheel arch anti-rubbing strip body or an automobile door guard plate anti-rubbing strip body.

Advantageous effects

The utility model discloses an increase the muscle piece respectively in the both sides of support notch, through three muscle pieces butt fusion simultaneously when carrying out the hot melt welding between support and the body, when increasing the sol volume, make body muscle piece and support muscle piece melt-connection be connected to together, promote the tensile strength of product welding back muscle position effectively, improve the stability and the qualification rate of product.

Drawings

Fig. 1 is a schematic axial view of a wheel arch body and a bracket assembly in the prior art.

Fig. 2 is a schematic top view of a wheel arch body and a bracket assembly in the prior art.

Fig. 3 is a schematic view of the cross-sectional structure a-a in fig. 2.

Fig. 4 is a schematic structural view of a thermal welding rib of a wheel arch body and a bracket in the prior art.

Fig. 5 is a schematic view of an axial structure of the wheel arch body and the bracket assembly according to the embodiment of the present invention.

Fig. 6 is a schematic top view of the wheel arch body and the bracket assembly according to the embodiment of the present invention.

Fig. 7 is a schematic view of the cross-sectional structure B-B in fig. 6.

Fig. 8 is a schematic structural view of a thermal welding rib position between a wheel arch body and a support according to an embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

A heat-fusion welding assembly structure as shown in fig. 1 and 2 includes a body 1 and a bracket 2 of a wheel arch of an automobile.

One side of the body 1 corresponding to the support 2 is provided with a first rib piece 3, and the first rib piece 3 and the body 1 are of an integral injection molding structure. The position that support 2 corresponds first muscle piece 3 is equipped with notch 4, and when body 1 and support 2 assembled each other, first muscle piece 3 stretches out from notch 4 of support 2.

One side of the bracket 2, which is back to the body 1 and is positioned at two sides of the notch 4, is provided with second ribs 5, as shown in fig. 7, the second ribs 5 and the bracket 2 are of an integral injection molding structure. The hot melt die horn completes the hot melt welding by fusing the first and

second webs

3 and 5 to form a "mushroom bag" as shown in fig. 8.

Through increase two second muscle pieces 5 parallel with first muscle piece 1 on support 2, with the first muscle piece 3 of body 1 and the second muscle piece 5 butt fusion simultaneously that support 2 newly increased, when increasing the sol volume, make body muscle piece and support muscle piece melt and be connected to together, promote the tensile strength of product welding back muscle position effectively, improve the stability and the qualification rate of product.

Claims

1. The utility model provides a hot melt welding assembly structure, includes body (1) and support (2), its characterized in that: one side that body (1) corresponds support (2) is equipped with first muscle piece (3), the position that support (2) correspond first muscle piece (3) is equipped with notch (4), stretch out in notch (4) of support (2) are followed in first muscle piece (3) of body (1), the both sides that one side that support (2) are dorsad body (1) is located notch (4) are equipped with second muscle piece (5) respectively.

2. A heat-fusion welding assembly structure as set forth in claim 1, wherein: the first rib piece (3) and the body (1) are of an integral injection molding structure.

3. A heat-fusion welding assembly structure as set forth in claim 1, wherein: the second rib piece (5) and the support (2) are of an integral injection molding structure.

4. A heat-fusion welding assembly structure as set forth in claim 1, wherein: the body (1) is an automobile wheel arch anti-rubbing strip body or an automobile door guard plate anti-rubbing strip body.