Marking Tool Pin Exchange Mechanism
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Solution Overview
Problem
Existing marking tools require dismantling of the tool head to exchange marking pins, which is inconvenient and time-consuming.
Innovation Solution
Designing the marking pin and tool head to allow for easy removal and insertion without dismantling the tool head, using a guide bushing and anti-twist device for secure positioning, and employing a holding device with magnetic or frictional locking mechanisms for quick pin exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the marking pin is designed with an undercut in the form of a shoulder, then the marking pin cannot be removed from the receiving space through the outlet opening, but the tool head must be unscrewed from its housing to remove the marking pin
Solution Approach 1:
The receiving space is divided into two functional zones: an inlet opening for insertion and an outlet opening for removal. The marking pin is designed with a shoulder that engages with a corresponding recess in the receiving space, creating a segmented locking mechanism that allows easy removal without disassembling the tool head.
Solution Approach 2:
Instead of requiring the tool head to be unscrewed for removal, the design inverts the approach by providing a direct removal path through the outlet opening. The shoulder-recess engagement allows the marking pin to be pulled out through the outlet opening in the inserted state, eliminating the need to disassemble the tool head.
2Ease of operation
If the marking pin can be removed through the outlet opening without dismantling the tool head, then the replacement process becomes simple and quick, but the marking pin must be designed without undercuts
Solution Approach 1:
The receiving space is pre-configured with a recess that corresponds to the shoulder on the marking pin. This preliminary structural arrangement ensures that when the marking pin is inserted, the shoulder automatically engages with the recess, providing secure retention while allowing easy removal through the outlet opening without requiring disassembly of the tool head.
3Reliability
If the marking pin is held on the holding device by magnetic attraction, then the marking pin can be securely held during operation, but the marking pin must be made of magnetizable material
Solution Approach 1:
The mechanical holding system is replaced with a magnetic holding system. The holding device incorporates a magnetic element that attracts and holds the marking pin through magnetic force, eliminating the need for complex mechanical retaining structures. This allows the marking pin to be securely held during operation while maintaining ease of removal through the outlet opening.
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 rapid and effortless replacement of marking pins, reducing downtime and improving operational efficiency by eliminating the need for auxiliary tools during normal operation.
Implementation Method 1
the marking pin is held on the holding device by magnetic attraction
Implementation Method 2
The marking tool includes a spring device that biases the marking pin to a rest position relative to the tool head
Implementation Method 3
The marking pin is preferably guided in a displaceable manner relative to the tool head, in particular by means of a guide bushing arranged on the tool head
Data Source
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AI summary
In order to create a marking tool for producing a marking on a workpiece, comprising a marking pin and a tool head with a receiving chamber in which a part of the marking pin is received, wherein the receiving chamber opens at an exit opening through which the marking pin extends into the outer space of the tool head, in which the marking pin is easily and quickly replaceable with another marking pin, it is proposed that the marking pin and the tool head are designed such that a part of the marking pin can be removed from the receiving chamber of the tool head through the exit opening and/or inserted into the receiving chamber of the tool head through the exit opening.