Fastener Driving Machine Reset Mechanism After Impact Jams

Solution Overview

Problem

Fastener driving machines often fail due to fasteners getting stuck, causing the impact unit to stop at abnormal positions and preventing proper engagement with the drive unit, leading to operational failures.

Innovation Solution

The fastener driving machine incorporates an energy storage unit, impact unit, push unit, drive unit, and reset unit, with specific positional transitions and engagements to ensure correct reengagement of the impact and push units, even when jamming occurs, using a reset unit to facilitate the push unit's return to its initial position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the impact unit stops at abnormal positions due to fastener jams, then the fastener driving machine fails to work properly, but the machine structure lacks a reset mechanism to restore proper engagement

Engineering Contradiction:

Improveoperational reliabilityVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The reset unit enables the push unit to automatically return to its initial position after abnormal stops, allowing the system to self-correct without external intervention. This self-service mechanism restores proper engagement between the impact unit and drive unit, eliminating the need for manual resetting and improving operational reliability.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The reset unit provides a feedback mechanism that detects when the push unit is not in its initial position (after abnormal stops) and automatically activates to restore proper positioning. This feedback loop ensures the system returns to a reliable operational state, preventing continuous failure due to abnormal positioning.

Inventive Principle:

Principle #23Feedback

2Adaptability or versatility

If the push unit lacks an automatic reset mechanism, then the machine cannot recover from jamming conditions, but adding a reset unit increases device complexity

Engineering Contradiction:

Improverecovery capabilityVSAvoidcomponent quantity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The reset unit enables the push unit to automatically return to its initial position after abnormal stops, allowing the system to self-correct without external intervention. This self-service mechanism restores proper engagement between the impact unit and drive unit, eliminating the need for manual resetting and improving operational reliability.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The reset unit introduces dynamic adaptability to the system, allowing it to automatically adjust and recover from abnormal conditions. By enabling the push unit to dynamically return to its initial position, the system gains versatility in handling jamming conditions and continues operation without manual intervention.

Inventive Principle:

Principle #15Dynamics

3Reliability

If the drive unit cannot engage with the push unit at abnormal positions, then operation fails, but ensuring correct engagement requires complex positioning mechanisms

Engineering Contradiction:

Improveengagement reliabilityVSAvoidpositioning mechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The reset unit enables the push unit to automatically return to its initial position after abnormal stops, allowing the system to self-correct without external intervention. This self-service mechanism restores proper engagement between the impact unit and drive unit, eliminating the need for manual resetting and improving operational reliability.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Instead of designing complex mechanisms to ensure the drive unit can engage with the push unit at any abnormal position, the invention inverts the approach by using the reset unit to return the push unit to its correct initial position. This simplifies the engagement mechanism while ensuring reliable reengagement after abnormalities.

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentEP4628259A1Fastener driving machine

Publication Date: 2025.10.08 TOGROUP TECH (SUZHOU) CO LTD

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AI summary

A fastener driving machine includes an impact unit, a push unit, a drive unit, and a reset unit. The impact unit has an initial position, a first transition position, a second transition position, and an energy storage position. The push unit has a first position corresponding to the first transition position and a second position corresponding to the second transition position. At the initial position, the impact unit is not engaged with the push unit; at the first transition position, the impact unit is engaged with the push unit; at the second transition position, the impact unit is disengaged from the push unit. The push unit is engaged with the impact unit and drives the impact unit from the first transition position to the second transition position. The reset unit provides a reset force to move the push unit from the second position to the first position.