Solder Printing Machine Frame Layout for Mask Vibration Isolation

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Solution Overview

Problem

Existing solder printing machines face challenges in maintaining the horizontal position stability of the mask, leading to reduced registration precision and printing quality due to vibration influences from the squeegee operation.

Innovation Solution

The solder printing machine design features a bed, a mask frame, and a squeegee frame as separate members, with the bed providing high rigidity to attenuate vibrations generated by the squeegee operation, thereby minimizing their impact on the mask position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the mask frame and squeegee frame are integrated into a single frame structure body, then the device complexity is reduced, but vibrations from squeegee operation are transmitted to the mask, reducing registration precision

Engineering Contradiction:

Improveframe structureVSAvoidregistration precision

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent divides the frame structure into separate mask frame and squeegee frame that are fixedly provided on the bed, isolating the mask from vibration sources while maintaining structural integrity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The mask frame is extracted as an independent component fixedly provided on the bed, separated from the squeegee frame, allowing vibration isolation while maintaining overall device functionality

Inventive Principle:

Principle #2Taking out (Extraction)

2Ease of operation

If the mask frame is made movable to adjust horizontal position, then the ease of operation is improved, but the stability of mask horizontal position deteriorates

Engineering Contradiction:

Improvemask positioningVSAvoidmask horizontal position stability

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The mask frame is fixedly provided on the bed at a predetermined position before operation, eliminating the need for horizontal adjustment during operation and ensuring stable mask positioning

Inventive Principle:

Principle #10Preliminary action

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

This configuration effectively suppresses the influence of vibrations on the mask position, maintaining registration precision and solder printing quality by sequentially transmitting and attenuating vibrations through the squeegee frame, bed, and mask frame, resulting in improved printing accuracy and quality.

Implementation Method 1

vibrations generated when the squeegee operates are transmitted sequentially to the squeegee frame, the bed, and the mask frame in that order, and arrives at the mask after the vibrations are attenuated largely

Methodology Applied

Scientific EffectVibration attenuation: Damping

Data Source

PatentUS20230211431A1Solder printing machine

Publication Date: 2023.07.06 FUJI CORP

AI summary

A solder printing machine, which is configured to print paste-state solder on a board by use of a mask and a squeegee configured to move on an upper surface of the mask, includes a bed, a mask frame fixedly provided on the bed and configured to hold the mask, and a squeegee frame fixedly provided on the bed, formed separately from the mask frame, and configured to support a driving mechanism configured to drive the squeegee.