Terminal Crimping Device Wire Positioning Mechanism
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Solution Overview
Problem
Existing terminal crimping devices face challenges in maintaining accurate crimping process precision due to displacement of the electric wire's end portion relative to the crimping connection, caused by load-induced bending and uplift during the crimping process.
Innovation Solution
A terminal crimping device with an electric-wire holding mechanism that inclines the electric wire in the same direction as the crimping force, using a V-shaped groove configuration between the terminal cutting body and the electric-wire presser to maintain the wire's position and reduce load-induced displacement, ensuring accurate crimping and preventing uplift.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the electric wire is pressed by the electric-wire presser to prevent uplift during crimping, then the wire position is controlled, but the wire bends under load and the end portion displaces relative to the crimping connection
Solution Approach 1:
The electric-wire holding space is formed in advance between the terminal cutting body and electric-wire presser before the crimping operation begins. This pre-formed space with inclined surfaces prepares the wire in the correct inclined position beforehand, so that when crimping occurs, the wire end portion remains properly positioned relative to the crimping connection without displacement
Solution Approach 2:
The electric-wire holding space changes the physical state of wire positioning by providing inclined surfaces that match the crimping force direction. The inclination angle of the holding space is specifically designed to correspond to the inclination of the crimping force, transforming how the wire responds to pressing forces during crimping
2Productivity
If the end portion of the electric wire is pressed down toward the electric-wire connecting portion during crimping, then the crimping process progresses, but the wire comes under load and bends causing position displacement
Solution Approach 1:
The inclined electric-wire holding space is prepared in advance to guide the wire into the correct position and orientation before the crimping force is applied. This preliminary positioning ensures that as the crimping process progresses and the wire is pressed down, the wire end portion maintains accurate positioning relative to the crimping connection
Solution Approach 2:
The inclined surfaces of the electric-wire holding space convert the harmful bending and displacement caused by crimping pressure into a beneficial alignment. The inclination of the holding space matches the direction of the crimping force, so the wire naturally follows the inclined path rather than bending unpredictably, transforming the displacement issue into a precise positioning solution
Data Source
AI summary
A terminal crimping device includes a terminal feeding device, a crimping device and an electric-wire holding mechanism that holds an electric wire with an end portion of the electric wire placed above an electric-wire connecting portion of a crimp terminal. The electric-wire holding mechanism includes an upper surface of a terminal cutting body, on which the electric wire is placed, and an electric-wire presser that is moved downward toward the upper surface and presses and thereby holds the electric wire placed on the upper surface. Between the electric-wire placing portion and a lower surface of the electric-wire presser, an electric-wire holding space is formed that inclines in the same direction to a declining direction in which the end portion of the electric wire is declined in association with downward move of the second die toward the first die, and that holds the electric wire in a thus inclined state.