Screen Printing Device Mask Support Structure
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Solution Overview
Problem
Existing screen printing devices face issues with paste deposits on the screen mask due to bending, which impairs print quality and requires labor-intensive maintenance to clean, leading to increased time and labor for maintenance.
Innovation Solution
A screen printing device with a board positioning system that includes clamping members and mask supporting members forming a rectangular frame, preventing the screen mask from bending by supporting it from below, thus reducing paste deposits and maintenance time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blocking and stopping member is pressed with adequate pressing force to prevent paste overflow, then paste sealing is improved, but screen mask bending occurs and print quality deteriorates
Solution Approach 1:
The invention introduces a support structure located at the rear surface of the screen mask, adding a dimensional element behind the mask to counteract bending forces. This rear support works in conjunction with the front blocking member to maintain mask flatness without requiring excessive pressing force that would cause bending.
Solution Approach 2:
The blocking and stopping member is designed with an intermediary structure that includes both a blocking portion at the front surface and a support portion at the rear surface. This intermediary design allows the same component to perform dual functions: preventing paste overflow from the front while providing structural support from the back to prevent mask bending.
2Object-generated harmful factors
If maintenance work is performed manually to remove paste deposits, then paste removal is achieved, but time and labor increase
Solution Approach 1:
The screen mask is designed with a structure that enables automatic self-cleaning through the printing process itself. The rear support structure prevents mask bending that causes paste accumulation, and the design allows paste deposits to be naturally removed or prevented from forming in the first place, eliminating the need for manual intervention.
Data Source
AI summary
At the two ends of a pair of clamping members (9a) which sandwich and clamp a board (10) from the Y direction, mask supporting members (9b) forming a rectangle frame are disposed, and a screen mask (12) is supported from below by the mask supporting members (9b) in a state that the board (10) abuts against the under surface of the screen mask (12). A downwards bending of the screen mask (12) can be prevented, and the time and labor of maintenance can be decreased by preventing the deposits of paste on the screen mask (12) that occur due to the bending.