Crank Pressing Layout That Stabilizes the Rotator Without Extra Bearings
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Solution Overview
Problem
Existing crank-type pressing devices face challenges in supporting the rotator without increasing device size due to the application of upward reaction forces, which cause bending moments and require additional bearings, leading to increased size and component count.
Innovation Solution
The design includes a rotator with a bearing and eccentric portion aligned on the same straight line perpendicular to the rotation axis, eliminating the need for additional bearings and reducing the device's size by stabilizing the rotator without applying bending moments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the end portion of the output shaft is supported by a bearing in a cantilever manner, then the structure is simple, but a bending moment is exerted on the output shaft during pressing which may cause the output shaft to swing out of its rotation axis
Solution Approach 1:
The invention introduces a new spatial dimension by positioning the bearing and eccentric portion on the same straight line perpendicular to the rotation axis. This dimensional arrangement transforms the force transmission path, allowing the reaction force to act directly through the bearing support point, thereby eliminating bending moments while maintaining structural simplicity.
2Reliability
If an auxiliary bearing is disposed on the other end of the crankshaft to firmly support the output shaft, then the output shaft stability is improved, but the device size increases
Solution Approach 1:
The invention extracts and eliminates the need for the auxiliary bearing by redesigning the positioning of the single bearing and eccentric portion. By removing this redundant component and its associated mounting space, the device size is reduced while the output shaft stability is maintained through the optimized bearing-eccentric portion alignment.
3Reliability
If the crankshaft length is increased to keep a sufficient distance between the bearing and auxiliary bearing, then the output shaft stability is improved, but the device size increases
Solution Approach 1:
The invention changes the spatial relationship between components by arranging the bearing and eccentric portion on the same straight line perpendicular to the rotation axis. This dimensional reconfiguration allows for adequate bearing support without requiring increased crankshaft length, thereby maintaining compact device dimensions while ensuring output shaft stability.
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
This configuration allows for stable support of the rotator, reducing the device's size and component count while maintaining effective operation, enabling compact terminal crimping apparatuses.
Implementation Method 1
The bearing supports the rotator such that the rotator is rotatable
Implementation Method 2
The rotator includes an eccentric portion eccentric from the first rotation axis. The link mechanism includes: a first connection connected to the eccentric portion of the rotator
Data Source
AI summary
An object of the present invention is to provide a crank-type pressing device that is able to successfully support a rotator and is allowed to be reduced in size. A crank-type pressing device (1) includes: a rotator (15) that rotates around a first rotation axis (C1) upon receiving a driving force from a motor (10); a bearing (16) supporting the rotator (15) such that the rotator (15) is rotatable; a link mechanism (20) including a first pin (21) connected to an eccentric hole (14a) of the rotator (15); and a pressing member (18) connected to a second pin (22) of the link mechanism (20). The bearing (16) and the eccentric hole (14a) are disposed on a pressing axis (V) perpendicular to the first rotation axis (C1).