Epoxy dispensing system and dispensing tip used therewith

• US 9,239,428 B2
• Filed: 02/22/2012
• Issued: 01/19/2016
• Est. Priority Date: 09/28/2011
• Status: Active Grant

• Current Assignee: kSARIA Corp.
• Original Assignee: kSARIA Corp.
• Inventors: Christopher, Anthony J., Ciolfi, George
• Primary Examiner(s): Nicolas, Frederick C
• Assistant Examiner(s): Zadeh, Bob
• Application Number:
  US13/402,315
• Publication Number:
  US 20130075427A1
• Time in Patent Office: 1,427 Days
• Field of Search: 222/1, 222/135, 222/145.5, 222/52, 222/137, 222/145.6, 222/23, 222/63, 222/333, 222/144.5, 451/54, 156/158, 156/578, 156/64
• US Class Current: 1/1
• CPC Class Codes: B01F 25/43141 composed of consecutive sections of helical formed elements
• CPC Class Codes: B01F 33/5012 adapted to be mounted during use on a standard, base or support
• CPC Class Codes: B01F 35/2207 Use of data, i.e. barcodes, 3D codes or similar type of tagging information, as instruction or identification codes for controlling the computer programs, e.g. for manipulation, handling, production or compounding in mixing plants B01F33/848 takes precedence
• CPC Class Codes: B01F 35/22141 Speed of feeding of at least one component to be mixed
• CPC Class Codes: B01F 35/522 comprising compartments keeping the materials to be mixed separated until the mixing is initiated containers or packages for packaging two or more different materials which must be maintained separate prior to use in admixture B65D81/32
• CPC Class Codes: B01F 35/7174 using pistons, plungers or syringes
• CPC Class Codes: B01F 35/8311 with means for controlling the motor driving the pumps or the other dispensing mechanisms
• CPC Class Codes: B05C 17/00553 with means allowing the stock of material to consist of at least two different components
• CPC Class Codes: B29B 7/7447 including means for feeding the components
• CPC Class Codes: G02B 6/25 Preparing the ends of light guides for coupling, e.g. cutting
• CPC Class Codes: G02B 6/3857 Crimping, i.e. involving plastic deformation
• CPC Class Codes: G02B 6/46 Processes or apparatus adapted for installing or repairing optical fibres or optical cables installation of cables containing electric conductors and optical fibres H02G
• CPC Class Codes: Y10T 225/30 Breaking or tearing apparatus
• CPC Class Codes: Y10T 225/325 With means to apply moment of force to weakened work

Abstract

The present disclosure describes, among other things, a method for attaching a fiber optic terminus of a fiber optic connector to a fiber optic cable. The method may include determining a type of epoxy to be mixed from a first material in a first barrel of the dual-barrel cartridge and a second material in a second barrel of the dual-barrel cartridge. The method may include determining a first rate at which to advance a first plunger against the first barrel based at least in part on the type of epoxy to be mixed. The method may include determining a second rate at which to advance a second plunger against the second barrel based at least in part on the type of epoxy to be mixed. The first rate and the second rate may be associated with a proportion between an amount of the first material and an amount of the second material to mix for the epoxy.

Claims

1. A method for attaching a fiber optic terminus of a fiber optic connector to a fiber optic cable, the method comprising:

inserting a dispensing tip of an automated epoxy dispenser into the fiber optic terminus of the fiber optic connector,

wherein the dispensing tip is shaped to engage with an interior surface of the fiber optic terminus and an outer surface of the dispensing tip is adapted to conform to the interior surface of the fiber optic terminus to maintain sealable engagement with the interior surface of the fiber optic terminus during insertion,

wherein the automated epoxy dispenser comprises a cartridge having (i) a first barrel containing a first material for forming an epoxy and (ii) a second barrel containing a second material for forming the epoxy, the first barrel and the second barrel being coupled to a mixing chamber of the automated epoxy dispenser for combining and mixing a portion of the first material and a portion of the second material to form the epoxy as the first material and the second material traverse therethrough, the mixing chamber being coupled to the dispensing tip for dispensing the epoxy into the fiber optic terminus,

wherein the dispensing tip comprises a mixer, the dispensing tip having a first portion having an internal diameter dimensioned to allow the first material and second material to mix-ably flow therethrough, the mixer having a plurality of mixing elements that extend through a portion of the length of the first portion and wherein the dispensing tip comprises a second portion having an outer surface dimensioned to conform to the interior surface of the fiber optic terminus;

determining, by a processor of a computing device, a first rate and a second rate for advancing a first motorized plunger and a second motorized plunger element of the epoxy dispenser against the first barrel and the second barrel, respectively, according to an epoxy formulation to be formed from the first material and the second material;

injecting the epoxy into the fiber optic terminus to, at least, fill a volume in the fiber optic terminus by advancing the first motorized plunger and the second motorized plunger element against the first barrel and the second barrel, respectively, and at the first rate and the second rate, respectively, wherein the volume is defined by the interior surface of the fiber optic terminus and the dispensing tip, and wherein the dispensing tip remains engaged with the interior surface of the fiber optic terminus during the advancement of the first motorized plunger and the second motorized plunger; and

attaching the fiber optic cable to the dispensed epoxy within the filled volume of the fiber optic terminus.

2. The method of claim 1, comprising:

detecting a setting on a control of the epoxy dispenser, the epoxy formulation or the epoxy to be formed.

3. The method of claim 1, comprising:

detecting a code on the cartridge, the code corresponding to the epoxy formulation or the epoxy to be formed.

4. The method of claim 3, wherein detecting the code on the cartridge comprises:

determining, by the computing device, whether at least one touch sensor of the automated epoxy dispenser has been triggered.

5. The method of claim 3, wherein detecting the code on the cartridge comprises:

determining, by the computing device, whether at least one light detector of the automated epoxy dispenser has been blocked from receiving light from a light emitter of the automated epoxy dispenser.

6. The method of claim 3, wherein detecting the code on the cartridge comprises:

detecting, by the computing device, at least one position of at least one mechanical switch of the automated epoxy dispenser.

7. The method of claim 3, wherein detecting the code on the cartridge comprises:

detecting, by the computing device, at least one bar code disposed on the cartridge.

8. The method of claim 3, wherein detecting the code on the cartridge comprises:

detecting, by the computing device, at least one alphanumeric code disposed on the cartridge.

9. The method of claim 1, wherein the first rate is retrieved, by the processor, from an entry in a look-up table associated with the epoxy to be mixed.

10. The method of claim 1, wherein the second motorized plunger is advancable independently of the first motorized plunger such that a proportion between the second rate and the first rate is variable depending on the epoxy formulation, and wherein the epoxy formulation comprises a proportion between an amount of the first material and an amount of the second material to be dispensed for forming the epoxy.

11. The method of claim 1, wherein the insertion extends a pre-defined length of the dispensing tip into the fiber optic terminus to define the volume to be filled with the epoxy in the fiber optic terminus, the volume defining an epoxy-dispensed portion of the fiber optic terminus to receive the fiber optic cable.

12. The method of claim 1, wherein the volume comprises (i) a chamber defined by the dispensing tip and the interior surface of the fiber optic terminus and (ii) a spacing through a ferrule engaged with the terminus, the chamber and spacing being adapted to receive the fiber optic cable.

13. The method of claim 1, wherein the first barrel is pre-filled with the first material and second barrel has been pre-filled with the second material, wherein the first material and the second material is degassed prior to the first barrel and the second barrel being installed into the epoxy dispenser.

14. The method of claim 1, wherein the epoxy dispenser comprises the processor.

15. An epoxy dispensing apparatus comprising:

a cartridge receptacle adapted to receive a cartridge having (i) a first barrel containing a first material for forming an epoxy and (ii) a second barrel containing a second material for forming the epoxy, the first barrel and the second barrel being coupled to a mixing chamber of the epoxy dispenser apparatus for combining and mixing the first material and the second material to form the epoxy when traverse there through; and

a dispensing tip coupled to the mixing chamber to receive the epoxy formed in the mixing chamber, the dispensing tip comprising an end for dispensing the received epoxy, said end being adapted to be inserted into a fiber optic terminus of a fiber optic connector and to engage an interior surface of the fiber optic terminus such that (i) the insertion forms a seal with the interior surface of the fiber optic terminus and an outer surface of the dispensing tip, wherein the outer surface is adapted to conform to the interior surface of the fiber optic terminus, (ii) the engagement maintains the dispensing tip with respect to the interior surface during the insertion, and (iii) the insertion extends a pre-defined length of the dispensing tip into the fiber optic terminus to define a chamber to be filled with the epoxy, the chamber defining an epoxy dispensed portion of the fiber optic terminus to receive a fiber optic cable,

wherein the dispensing tip comprises a mixer, the dispensing tip having a first portion having an internal diameter dimensioned to allow the first material and the second material to mix-ably flow therethrough, the mixer having a plurality of mixing elements that extend through a portion of the length of the first portion and wherein the dispensing tip comprises a second portion having an outer surface dimensioned to conform to the interior surface of the fiber optic terminus.

16. The apparatus of claim 15, further comprising:

a code detector adapted to receive a code on the cartridge loaded onto the apparatus, the code corresponding to the epoxy to be mixed.

17. The apparatus of claim 15, comprising:

determining, by a processor of the apparatus, a first rate at which to advance a first motorized plunger element against the first barrel based at least in part on the determined epoxy formulation, and

determining, by the processor of the apparatus, a second rate at which to advance a second motorized plunger element against the second barrel based at least in part on the determined epoxy formulation, wherein the second motorized plunger is advancable independently of the first motorized plunger such that a difference between the second rate and the first rate is variable depending on the determined epoxy formulation.

18. The apparatus of claim 15, wherein the length of the mixer is between 1.5 and 3 inches and the first diameter is between ⅛

and ¼

of an inch.

19. The method of claim 15, wherein the mixer comprises between 12 and 24 helical mixing elements.