In a fluid pump and cartridge assembly, a cartridge includes a material inlet port, a material outlet port, and a feed screw. The feed screw delivers fluid to be dispensed from the fluid inlet to the outlet port. The fluid inlet is preferably elongated in a direction along a longitudinal axis of the
In a fluid pump and cartridge assembly, a cartridge includes a material inlet port, a material outlet port, and a feed screw. The feed screw delivers fluid to be dispensed from the fluid inlet to the outlet port. The fluid inlet is preferably elongated in a direction along a longitudinal axis of the feed screw to enhance consistency in material flow through the cartridge. The feed screw is preferably driven by a closed-loop servo motor to achieve high-performance dispensing resolution. The assembly is preferably compatible with fixed-z and floating-z cartridges.
대표청구항▼
1. A fluid dispensing pump, comprising: a pump housing having a cartridge cavity at a bottom portion of the pump housing;a removable cartridge assembly positioned in the cartridge cavity, the cartridge assembly including a fluid inlet, a fluid outlet, and a fluid delivery mechanism that delivers flu
1. A fluid dispensing pump, comprising: a pump housing having a cartridge cavity at a bottom portion of the pump housing;a removable cartridge assembly positioned in the cartridge cavity, the cartridge assembly including a fluid inlet, a fluid outlet, and a fluid delivery mechanism that delivers fluid from the fluid inlet to the fluid outlet, the fluid outlet having a fluid path that extends along a fluid path axis, wherein the pump housing has a side wall that is parallel to the fluid path axis; andan attachment mechanism removably coupled to the side wall of the pump housing, the attachment mechanism including a locking mechanism that releasably attaches the fluid dispensing pump to a pump dispensing frame, wherein the locking mechanism further includes a spring loaded lever and a lock pin capture that includes a clasp, wherein the locking mechanism is spaced apart from the fluid path axis, wherein the lock pin capture includes an axis of extension that extends in a direction that is perpendicular to the fluid path axis when the cartridge is attached to the side wall of the pump housing, and wherein the spring loaded lever engages the clasp in the lock pin capture to releasably attach a release bracket coupled to the side wall of the pump housing to a release bracket plate coupled to the pump dispensing frame. 2. The fluid dispensing pump of claim 1, wherein the fluid delivery mechanism includes a feed screw. 3. The fluid dispensing pump of claim 1, wherein the release bracket includes a central lock pin, the central lock pin comprising a body that extends longitudinally from the release bracket and a retaining head having a width that is greater than a width of the body. 4. The fluid dispensing pump of claim 3, wherein the retaining head is received by the release bracket plate coupled to the pump dispensing frame, the release bracket plate including a lock pin capture that holds the fluid dispensing pump in place against the pump dispensing frame. 5. The fluid dispensing pump of claim 4, wherein the release bracket further includes first and second alignment pins that extend from the release bracket, and wherein the release bracket plate further includes first and second alignment pin captures that receive the first and second alignment pins, respectively, to align the release bracket with the release bracket plate. 6. The fluid dispensing pump of claim 5, wherein the first and second alignment pins are positioned at opposite sides of the central lock pin, and wherein the first and second alignment pins and the lock pin are aligned along an axis that is parallel to a longitudinal axis of the pump housing. 7. The fluid dispensing pump of claim 1, wherein the spring-loaded lever disengages the clasp in the lock pin capture to release the fluid dispensing pump from the pump dispensing frame. 8. The fluid dispensing pump of claim 1, wherein a direction of extension of the locking mechanism is orthogonal to the fluid path axis. 9. The fluid dispensing pump of claim 1, wherein the release bracket plate further includes first and second alignment pin captures that receive first and second alignment pins, respectively, which extend from the release bracket coupled to the fluid dispensing frame. 10. The fluid dispensing pump of claim 9, wherein the first and second alignment pin captures are positioned at opposite sides of the lock pin capture, and wherein the first and second alignment pin captures and the lock pin capture are aligned along an axis that is parallel to a longitudinal axis of the pump housing. 11. The fluid dispensing pump of claim 1, further comprising a servo motor positioned on the top portion of the pump housing along the fluid path axis. 12. The fluid dispensing pump of claim 11, wherein the cartridge assembly includes a feed screw having an indexed shaft, wherein the indexed shaft extends through an aperture at a top portion of the cartridge cavity along the fluid path axis, and wherein the servo motor registers with the indexed shaft through the aperture. 13. A fluid dispensing system, comprising: a fluid dispensing pump including a pump housing, the fluid dispensing pump including a fluid path that extends along a fluid path axis, wherein the pump housing has a side wall that is parallel to the fluid path axis;a first attachment mechanism coupled to the side wall of the pump housing, the first attachment mechanism including a first locking mechanism, wherein the first attachment mechanism includes a release bracket plate and the first locking mechanism includes a lock pin capture, and wherein a second attachment mechanism includes a release bracket and the second locking mechanism includes a central lock pin, and wherein the first locking mechanism is spaced apart from the fluid path axis, and wherein the lock pin capture of the first locking mechanism includes an axis of extension that extends in a direction that is perpendicular to the fluid path axis when the cartridge is attached to the side wall of the pump housing;a pump dispensing frame; andthe second attachment mechanism coupled to the pump dispensing frame, the second attachment mechanism including a second locking mechanism, wherein the first locking mechanism is in communication with the second locking mechanism to releasably attach the fluid dispensing pump to the pump dispensing frame. 14. The fluid dispensing system of claim 13, wherein the central lock pin comprising a body that extends longitudinally from the release bracket and a retaining head having a width that is greater than a width of the body. 15. The fluid dispensing system of claim 13, wherein the central lock pin is received by the lock pin capture to releasably attach the fluid dispensing pump to the pump dispensing frame. 16. The fluid dispensing system of claim 15, wherein the release bracket further includes first and second alignment pins that extend from the release bracket, and wherein the release bracket plate includes first and second alignment pin captures that receive the first and second alignment pins, respectively, to align the release bracket with the release bracket plate. 17. The fluid dispensing system of claim 13, wherein the central lock pin comprises a body that extends longitudinally from the release bracket and a retaining head having a width that is greater than a width of the body. 18. The fluid dispensing system of claim 13, wherein the first locking mechanism further includes a spring-loaded lever and the lock pin capture includes a clasp, and wherein the spring-loaded lever engages the clasp in the lock pin capture to releasably attach the release bracket to the release bracket plate. 19. The fluid dispensing system of claim 18, wherein the spring-loaded lever disengages the clasp in the lock pin capture to release the fluid dispensing pump from the pump dispensing frame. 20. The fluid dispensing system of claim 12, wherein the release bracket further includes first and second alignment pins that extend from the release bracket, wherein the release bracket plate includes first and second alignment pin captures that receive the first and second alignment pins, respectively, to align the release bracket with the release bracket plate. 21. The fluid dispensing system of claim 13, wherein the direction of extension of the locking mechanism is orthogonal to the fluid path axis. 22. The fluid dispensing system of claim 13, further comprising a servo motor positioned on the top portion of the pump housing along the fluid path axis. 23. The fluid dispensing system of claim 22, wherein the cartridge assembly includes a feed screw having an indexed shaft, wherein the indexed shaft extends through an aperture at a top portion of the cartridge cavity along the fluid path axis, and wherein the servo motor registers with the indexed shaft through the aperture.
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