Coating Transfer Tool with Switchable Cover for Spot and Continuous Film Application
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Solution Overview
Problem
Conventional coating film transfer tools face difficulties in accurately transferring films over small sections due to inadequate adjustability and user-friendliness issues, particularly in switching between spot and continuous transfer modes.
Innovation Solution
A coating film transfer tool with a cover member that can be opened and closed to switch between spotting and continuous transfer functions, utilizing a pawl mechanism to control the gear engagement and elastic member for smooth operation, allowing the transfer head to protrude and retract for precise spot transfer and continuous coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional transfer tool with a fixed transfer head is used, then continuous transfer is achieved, but spot transfer precision and adjustability deteriorate
Solution Approach 1:
The transfer head is designed to be movable relative to the case body, capable of sliding between a retracted position (for spot transfer) and a protruding position (for continuous transfer). This dynamic positioning allows the tool to adapt its configuration based on the transfer mode required, resolving the contradiction between spot precision and continuous transfer capability
2Reliability
If a stamp-type transfer tool with engaged gear and pawl is used, then spot transfer reliability is improved, but continuous transfer smoothness deteriorates
Solution Approach 1:
The gear and pawl mechanism is designed to engage only when the transfer head is in the retracted position for spot transfer, providing reliable incremental tape advancement. When the transfer head protrudes for continuous transfer, the mechanism disengages, allowing smooth continuous movement without mechanical interference. This dynamic engagement/disengagement resolves the contradiction between reliability for spot transfer and smoothness for continuous transfer
3Ease of operation
If the transfer head is kept exposed for continuous transfer, then ease of operation is improved, but coating film protection deteriorates
Solution Approach 1:
The transfer head can be dynamically positioned in either a protruding state (exposed) for easy continuous transfer operation or a retracted state (protected within the case) when not in use. This dynamic positioning allows the system to alternate between ease of operation and film protection based on operational requirements
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
Enables reliable and user-friendly transfer of coating films over both small and large areas by allowing easy switching between spotting and continuous transfer modes, improving handleability and ensuring consistent film application.
Implementation Method 1
said elastic member, upon release of said cover member, elastically urges the sliding body in a direction to cause said pawl member to rotate the gear
Data Source
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AI summary
A gear 40 is provided coaxially on a supply reel 21a or a take-up reel 21b. A sliding body 50 which comprises a pawl member 52 which engages with the gear 40 in only one direction and a cover member 55 which houses a transfer head 30 and has an opening 56 is held movable by means of an elastic member 60 within a casing main body 20. The cover member 55 is made openable and closable on the sliding body 50. With the cover member 55 in a closed position, a coating film can be transferred on a spot by pressing the cover member 55 against a receiving surface to cause the sliding body 50 to retreat and by pressing the transfer head 30 against the receiving surface which is pushed out of the opening 56 of the cover member 55, and as the cover member 55 is released from pressing and the sliding body 50 is moved forward, the pawl member 52 rotates the supply reel 21a and the take-up reel 21b in a forwarding direction of the transfer tape. With the cover member 55 in an open position, the coating film can be transferred continuously by pressing the transfer head 30 against and moving it parallel to the receiving surface.