Nut Feeder Rod with Small-Diameter Tip for Abnormal Nut Detection
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Solution Overview
Problem
Existing nut feeding methods risk scattering and damaging workpieces by flicking abnormal nuts, and may cause the feed rod to move forward without engaging with subsequent nuts due to forceful movement.
Innovation Solution
A nut feeding method where the feed rod's small-diameter front-end portion enters a nut receiving position without being inserted into the nut, allowing abnormal nuts to be pushed out without flicking, and engages with subsequent nuts to prevent further movement, using a rod driver and engagement portion to manage the feed rod's states and detect abnormalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the feed rod moves forward with great force to feed nuts, then the nut feeding speed increases, but abnormal nuts are flicked forward and scattered, causing damage to workpieces
Solution Approach 1:
The small-diameter front-end portion of the feed rod preliminarily enters the nut receiving position to detect the presence of a nut before the main feeding action occurs. This preliminary detection prevents forceful forward movement when no nut is present, thereby preventing abnormal nuts from being flicked forward and scattered.
Solution Approach 2:
The small-diameter front-end portion acts as an intermediary between the feed rod and the nut. It can enter the nut receiving position independently to detect abnormalities without transmitting the full force of the feed rod's forward movement, thus preventing harmful flicking while maintaining feeding capability.
2Manufacturing precision
If the small-diameter front-end portion of the feed rod is inserted into the screw hole of the nut, then the nut can be fed accurately to the intended position, but abnormal nuts with smaller diameter screw holes cannot be detected and may be fed incorrectly
Solution Approach 1:
The small-diameter front-end portion performs a preliminary detection action by entering the nut receiving position before the main feeding action. It checks whether a nut is present and whether the screw hole diameter is appropriate, allowing the system to identify abnormal nuts before attempting to feed them to the intended position.
Solution Approach 2:
The feed rod is segmented into two functional parts: the small-diameter front-end portion for detection and entry into the nut receiving position, and the main body for forceful forward movement. This segmentation allows the detection function to operate independently without compromising positioning accuracy when normal nuts are present.
3Productivity
If the feed rod moves forward from standby position, then the nut can be fed to the intended position, but the feed rod may move forward without engaging with subsequent nuts, causing abnormal nuts to be flicked
Solution Approach 1:
The small-diameter front-end portion performs a preliminary action by entering the nut receiving position during the standby state to ensure engagement with the nut before the main forward movement occurs. This preliminary engagement prevents the feed rod from moving forward without engaging a nut, thereby preventing abnormal nuts from being flicked.
Solution Approach 2:
The system uses feedback from the small-diameter front-end portion's position and engagement status to control the main feed rod movement. The feed rod only moves forward with great force when the small-diameter front-end portion has successfully engaged with a nut, ensuring reliable engagement and preventing harmful flicking.
Data Source
AI summary
A small-diameter front-end portion of a feed rod is allowed to enter into the screw hole of a nut delivered by a nut chute, and the nut is fed to an intended position by the forward movement of the feed rod. When an abnormal nut having a screw hole into which the small-diameter front-end portion cannot be inserted is delivered, the abnormal nut is prevented from being flicked by the feed rod. In order to achieve this, in a standby state, the small-diameter front-end portion of the feed rod enters a nut receiving chamber and is then stopped. On condition that the abnormal nut is received in the nut receiving chamber, if the feed rod moves forward to enter into the standby state, the abnormal nut is slightly pushed out forward from the nut receiving chamber.