Tab Stock Feeder Wear Reduction for Reciprocating Press Motion
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Solution Overview
Problem
The tab stock feeder assembly in metal can production experiences wear and tear issues due to reciprocal motion and misalignment of rotating elements, particularly at specific locations like the hinge sleeves and pin, and the toroidal bearing assembly's inability to handle forces outside its plane of rotation.
Innovation Solution
Incorporating a wear reduction assembly with ball bearings and one-way clutch devices between the lifted member assembly's hinge pin and base, and spherical roller bearings between the biasing roller assembly and support arm, to distribute wear evenly and reduce frictional forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the tab stock feeder uses a drive wheel with a biasing roller for reciprocating motion, then the tab stock can be advanced and held in position, but wear occurs at specific locations on the hinge sleeves and hinge pin
Solution Approach 1:
A wear reducing element is introduced as an intermediary component between the hinge pin and hinge sleeves. This mediator element distributes the contact pressure and wear across a larger surface area, preventing concentrated wear at specific locations while maintaining the reciprocating motion function of the drive wheel and biasing roller assembly.
2Force
If the toroidal bearing assembly is used for the biasing roller, then forces in the plane of rotation are ameliorated, but forces outside the plane of rotation cause wear
Solution Approach 1:
The wear reducing element serves as a mediator between the biasing roller and the toroidal bearing assembly. It accommodates forces acting outside the plane of rotation by providing a compliant interface that distributes these non-planar forces, preventing direct transmission of harmful loads to the bearing assembly and reducing wear on the support arm.
3Device complexity
If the hinge pin and hinge sleeves are directly engaged without wear reduction elements, then the structure is simple, but wear concentrates at specific locations reducing service life
Solution Approach 1:
The wear reducing element is inserted as a mediator between the hinge pin and hinge sleeves. This addition minimally increases structural complexity while dramatically extending service life by distributing wear evenly across the contact surfaces, preventing the concentrated wear that would otherwise occur at specific high-stress locations.
4Ease of operation
If the lifted member reciprocates between positions without wear reduction, then the mechanism operates smoothly, but the hinge components experience localized wear
Solution Approach 1:
The wear reducing element acts as a mediator that maintains the smooth reciprocating motion of the lifted member while protecting the hinge components. It provides a low-friction interface that allows easy operation during reciprocation while simultaneously distributing the mechanical loads to prevent localized wear on the hinge pin and sleeves.
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 significantly reduces wear on critical components, extends their service life, and allows for smoother operation by evenly engaging the tab stock, reducing wear in specific locations and accommodating forces in non-primary directions.
Implementation Method 1
Incorporating a wear reduction assembly with ball bearings and one-way clutch devices between the lifted member assembly's hinge pin and base, and spherical roller bearings between the biasing roller assembly and support arm, to distribute wear evenly and reduce frictional forces.
Implementation Method 2
spherical roller bearings between the biasing roller assembly and support arm, to distribute wear evenly and reduce frictional forces
Data Source
AI summary
A tab stock feeder assembly for a press includes a plurality of support elements, a plurality of rotating elements, and a number of operative elements. Each rotating element is rotatably coupled to an associated support element. Each operative element coupled to at least one of the support element or one of the rotating element and wherein each the operative element is structured to be engaged by a rotating element. The tab stock feeder assembly further includes a wear reduction assembly including a plurality of wear reducing elements. A plurality of support elements have at least one wear reduction assembly wear reducing element disposed between a rotating element and the associated support element.