Glue Dispensing Device with Squeegee and Elastic Buffer
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Solution Overview
Problem
Pneumatic dispensing technology often results in glue being drawn onto the product after dispensing, affecting subsequent applications and requiring higher precision and operability in fields like micro-assembly and rapid manufacturing.
Innovation Solution
A glue dispensing device with a piston-driven mechanism, an elastic member for buffering, and a squeegee assembly to reduce glue draw and improve precision, featuring a glue container, drivers, limiting plates, and a squeegee assembly to control glue flow and scraping excess glue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pneumatic dispensing is used, then dispensing speed is improved, but glue draw occurs and affects subsequent application
Solution Approach 1:
A squeegee assembly is introduced as an intermediary component between the dispensing opening and the product. The squeegee assembly includes a scraper that contacts the dispensing opening to prevent glue from being drawn onto the product while allowing controlled dispensing. This mediator resolves the contradiction by blocking the harmful glue draw path without interfering with the pneumatic dispensing function.
Solution Approach 2:
The harmful function of glue draw is extracted and separated from the dispensing process. By positioning the scraper in a specific location and using it to block the dispensing opening, the patent extracts the prevention function from the main dispensing mechanism, allowing pneumatic dispensing to continue while the scraper independently prevents glue draw.
2Productivity
If pneumatic dispensing is used, then dispensing efficiency is improved, but precision control over glue volume is reduced
Solution Approach 1:
The patent implements feedback control through the elastic member and limiting plate mechanism. The elastic member provides a buffering force that feedbacks to control the piston's movement, while the limiting plate physically limits the maximum displacement. This feedback system ensures precise glue volume control while maintaining high dispensing efficiency through pneumatic actuation.
Solution Approach 2:
The patent changes the physical parameters of the system by introducing the elastic member with specific buffering force characteristics and the limiting plate with defined positional constraints. These parameter changes transform the uncontrolled pneumatic dispensing into a precision-controlled process while maintaining efficiency.
3Object-generated harmful factors
If a squeegee assembly is added to prevent glue draw, then glue draw is reduced, but device complexity increases
Solution Approach 1:
The squeegee assembly is merged with the existing pneumatic dispensing structure. The scraper is integrated into the dispensing head assembly, and the elastic member with limiting plate is combined with the piston mechanism. This merging approach prevents glue draw while minimizing additional complexity by utilizing and integrating with existing structural elements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances dispensing quality by reducing glue draw at the dispensing opening and improving precision control over glue volume, ensuring better application outcomes.
Implementation Method 1
an elastic member for buffering
Implementation Method 2
a squeegee assembly to control glue flow and scraping excess glue
Data Source
AI summary
A glue dispensing device includes a glue container, a first driver, an elastic member, a connecting plate, and a first limiting plate. The glue container includes a containing main body and a glue dispensing head. The glue dispensing head includes a first receiving groove and a dispensing opening. The containing main body includes a second receiving groove and a third receiving groove. The first driver is arranged in the glue container, and includes a piston, a driving portion, and a piston rod. The elastic member is arranged in the second receiving groove. The connecting plate is fixed in the first receiving groove and located at a side of the piston. A first through hole penetrates the connecting plate. The first limiting plate is movably received in the third receiving groove and fixedly sleeved on the piston rod. The elastic member abuts between the connecting plate and the first limiting plate.