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Heating connection method for thermoplastic plastic adopting rivet

A thermoplastic and connection method technology, applied in the field of thermoplastic connection, can solve the problems of plastic melting and poor joint forming, and achieve the effect of saving time, simple preparation and low requirements.

Inactive Publication Date: 2015-08-12
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the background technology is that the plastic melts, and the deformation of the rivet is uncontrolled, resulting in poor joint formation

Method used

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  • Heating connection method for thermoplastic plastic adopting rivet
  • Heating connection method for thermoplastic plastic adopting rivet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Punching: The connecting plate is made of thermoplastic: polypropylene (PP), with a thickness of 2mm and a semi-hollow aluminum rivet with a rivet size of Φ3mm×8mm. Drill a hole at the geometric center of the lap joint area of ​​the sheet, the diameter of the hole being equal to the diameter of the rivet. Use sandpaper to smooth and remove burrs around the hole;

[0025] (2) Assembly: implant the semi-tubular rivets into the pre-punched holes of the plates to be connected, and press the plates tightly. The rivet head 5 is in close contact with the plates to be connected, and the excess part of the rivet is left on the semi-hollow side, exposing 4mm. Place the assembled joint between the two electrodes to avoid uneven deformation of the rivets during the welding process. The rivet head 5 is placed on the first electrode 3, the semi-hollow end 6 is opposite to the second electrode 1, and it is ensured that the semi-hollow rivet 2 is on the same axis OO' as the secon...

Embodiment 2

[0028] (1) Drilling: The connecting plate is thermosetting plastic: epoxy resin plate, thickness 2mm, rivet size is semi-hollow iron rivet of Φ3mm×8mm. Drill a hole at the geometric center of the lap joint area of ​​the sheet, the diameter of the hole being equal to the diameter of the rivet. Sand around the hole smooth and deburr:

[0029] (2) Assembly: implant the semi-tubular rivets into the pre-punched holes of the plates to be connected, and press the plates tightly. The rivet head 5 is in close contact with the plates to be connected, and the excess part of the rivet is left on the semi-hollow side, exposing 4mm. Place the assembled joint between the two electrodes to avoid uneven deformation of the rivets during the welding process. The rivet head 5 is placed on the first electrode 3, the semi-hollow end 6 is opposite to the second electrode 1, and it is ensured that the semi-hollow rivet 2 is on the same axis OO' as the second electrode 1 and the first electrode 3; ...

Embodiment 3

[0032] (1) Drilling: the connection plate is epoxy resin plate and polypropylene (PP), the thickness is 2mm, and the rivet size is a semi-hollow aluminum rivet of Φ3mm×8mm. Drill a hole at the geometric center of the lap joint area of ​​the sheet, the diameter of the hole being equal to the diameter of the rivet. Use sandpaper to smooth and remove burrs around the hole;

[0033] (2) Assembly: implant the semi-tubular rivets into the pre-punched holes of the plates to be connected, and press the plates tightly. The rivet head (5) is in close contact with the plates to be connected, and the excess part of the rivet is left on the semi-hollow side, exposing 4mm. Place the assembled joint between the two electrodes to avoid uneven deformation of the rivets during the welding process. The rivet head 5 is placed on the first electrode 3, the semi-hollow end 6 is opposite to the second electrode 1, and it is ensured that the semi-hollow rivet 2 is on the same axis OO' as the second...

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Abstract

The invention discloses a heating connection method for a thermoplastic plastic adopting a rivet. The heating connection method comprises the following steps: (1) punching: pre-punching the geometric centre of the lapped joint of a plate according to the diameter of the chosen semi-tubular rivet, wherein the hole diameter is equal to the diameter of the rivet, so that the rivet is in close contact with the connected base material; (2) assembling: implanting the rivet in the pre-punched hole of the connected plate, and tightly pressing the plate, wherein a rivet head (5) is in close contact with the connected plate, and the redundant part of the rivet is left at a semi-tubular side, the assembled joint is placed between two electrodes, the rivet head (5) is placed on the first electrode (3), a semi-tubular end (6) is opposite to the second electrode (1), and the semi-tubular rivet (2), the second electrode (1) and the first electrode (3) are located on the same axis (OO'); and (3) riveting.

Description

technical field [0001] The invention relates to the joining technology of thermoplastics. Background technique [0002] Plastics can be divided into thermoplastic and thermosetting plastics according to their different morphological properties after heating. Due to the properties of plastics, commonly used plastic connection technologies such as hot tool welding, hot gas welding, and resistance welding are mainly used in thermoplastics. The disadvantage of the background art is that the plastic melts, and the deformation of the rivet is uncontrolled, resulting in poor joint formation. Contents of the invention [0003] The object of the invention is to provide a thermoplastic rivet heating connection method. [0004] The invention is a thermoplastic rivet heating connection method, the steps of which are as follows: [0005] (1) Punching: According to the diameter of the selected semi-hollow rivet, pre-drill a hole at the geometric center of the lap joint of the plate, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/60
Inventor 张昌青白生天王希靖马晓飞杨黎东勒少龙
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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