Method and apparatus for applying tension to a screen cloth on a vibrating screening machine
A variable resilience tension bar cap is disclosed for use in either, an end or side mounted tensioner in a vibrating screening machines used for material processing. A fluid filled hose or bladder may be disposed in a cap for a tensioner bar used to stretch wire cloth. Alternately a series of nested or replaceable resilient caps can be placed over the terminal end of a tensioner bar so that the cap is made to have a different resilience characteristics.
1. A method of improving operation of a material processing vibrating screening machine, comprising the steps of:
providing a screening media configured to only allow particles having smaller size than a predetermined size to pass therethrough;
providing a tensioner member, configured to be moved into various positions so as to apply a variable tension to said screening media; and
providing first resilient matter, having a first resiliency characteristic, disposed between portions of said screening media and portions of said tensioner member, said first resilient matter being constructed and configured to at least partially conform to said portions of said screening media and thereby more evenly distribute, across said portions of said screening media, forces which are applied by said tensioner member.
2. The method of claim 1 further comprising the steps of:
determining that a change of an effective resiliency characteristic is desirable for matter disposed between said screening media and portions of said tensioner member; and
changing said effective resiliency characteristic in response to said step of determining.
3. The method of claim 2 wherein said step of changing said effective resiliency characteristic comprises the steps of providing a second resilient matter with a second resiliency characteristic between said portions of said screening media and said tensioner member.
4. The method of claim 3 wherein said step of providing a second resilient matter is performed after performing a step of removing said first resilient matter from between said portions of said screening media and said portions of said tensioner member.
5. The method of claim 4 wherein said first resilient matter is a molded resilient member configured to fit over a terminal portion of said tensioner member.
6. The method of claim 2 wherein said first resilient matter comprises: a resilient vessel filled with a liquid.
7. The method of claim 6 wherein:
a. a pressure characteristic of said liquid is controllable and objectively measurable, in response to said step of determining; and
b. said resilient vessel comprises one of a hose and a bladder.
8. A system for improving operation of a material processing vibrating screening machine comprising:
screen media configured to only allow particles having smaller size than a predetermined size to pass therethrough;
a tensioner member, configured to be moved into various positions so as to apply a variable tension to said screening media; and
resilient matter, having a variable resiliency characteristic, disposed between portions of said screening media and portions of said tensioner member, said resilient matter being constructed and configured to at least partially conform to said portions of said screening media and thereby more evenly distribute, across said portions of said screening media, forces which are applied by said tensioner member.
9. The system of claim 8 wherein said resilient matter is a molded rubber member.
10. The system of claim 8 wherein said resilient matter comprises:
a. a resilient vessel;
b. a pressurized liquid disposed in said resilient vessel and causing said resilient vessel to change shape depending upon a level of pressure upon said pressurized liquid.
11. The system of claim 10 wherein said resilient vessel comprises one of a hose and a bladder.
12. The system of claim 11 further comprising a pressure indicator for reporting said level of pressure upon said pressurized liquid disposed in hose.
13. A system for changing a resiliency characteristic of an interface between a screening media configured to only allow particles having smaller size than a predetermined size to pass therethrough and a tensioner member, configured to be moved into various positions so as to apply a variable tension to said screening media; where the system comprises:
a plurality of molded tensioner caps where each of said plurality of molded tensioner caps is configured to securely fit over one of: a terminal portion of said tensioner member and another one of said plurality of molded tensioner caps.
14. The system of claim 13 wherein each of said plurality of molded tensioner caps are configured to be replacements for another of said plurality of molded tensioner caps.
15. The system of claim 13 wherein said plurality of molded tensioner caps are configured to nest upon each other.