A glue applicator and its nozzle structure

Abstract

The invention provides a gluing device and its nozzle structure, and relates to the field of gluing nozzles. The gluing device includes a frame, a gluing pump installed on the frame, and a nozzle tail pipe. The nozzle tail pipe is detachably connected to the gluing pump. The upper part of the nozzle tail pipe is provided with a connecting structure, and the nozzle tail pipe is located under the connecting structure There is a safety groove on the side; the minimum design shear stress of the nozzle tail pipe is σ 1 , the elastic modulus is E, the specific surface energy is γ, and the wall thickness of the nozzle tail pipe at the safety groove is a; according to the Griffith fracture criterion formula: G=2γ, the minimum design shear stress σ can be substituted 1 , to obtain the maximum wall thickness a of the nozzle tail pipe at the insurance groove 1 , then a≤a 1 . Design the pipe wall thickness a of the nozzle tail pipe at the safety groove to be smaller than the maximum pipe wall thickness a 1 , to ensure that when the nozzle tailpipe is subjected to the minimum design shear stress σ 1 , the nozzle tailpipe must be able to break and damage at the safety groove, and the protection effect on the whole machine of the gluing device is better.

Description

technical field [0001] The invention relates to the technical field of gluing nozzles, in particular to a gluing device and its nozzle structure. Background technique [0002] In automobile production, automatic gluing equipment is usually used to complete gluing operations on the body. The automatic gluing equipment includes a base, a frame, a gluing pump and a nozzle. The robot grabs the workpiece and aligns it with the nozzle of the automatic gluing equipment and moves according to the set trajectory. The glue is discharged through the nozzle and applied to the corresponding surface of the workpiece. Location. [0003] In fact, during the gluing process, the moving workpiece is likely to collide with the nozzle of the automatic gluing equipment. Subsequently, a Chinese utility model patent with the authorized announcement number CN204974282U and the authorized announcement date of 2016.01.20 discloses a coating glue machine nozzle, and specifically discloses that the gl...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above problems, the object of the present invention is to provide a gluing device to solve the problem that the nozzle of the existing gluing machine cannot be broken in time under the set impact force, and the protection effect on the whole machine of the gluing device is poor.

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