Agitating – Rubber or heavy plastic working – Rotating and reciprocating stirrer
Patent
1987-06-26
1989-04-25
Simone, Timothy F.
Agitating
Rubber or heavy plastic working
Rotating and reciprocating stirrer
92 2, 92108, 366100, 366289, 425583, 425587, B29B 106
Patent
active
048242551
ABSTRACT:
A drive apparatus useful in screw injection molding apparatus is disclosed. The apparatus is particularly useful when both axial and rotational movements are required because the invention discloses a construction that reduces the wear attributed to sealing gaskets of relatively large diameter which are subjected to rotational stresses and relatively high linear velocities. In the injection molding embodiment described in detail, the extruder screw is rigidly attached to a drive piston that has both axial and rotational movements. Concentric to that drive piston is a drive cylinder tha has only axial movement yet is connected to the drive piston such that the piston is able to rotate freely relative to the cylinder but may move axially only when the cylinder moves. Thus, the sealing gaskets of the drive cylinder are free of rotational stresses which extends the useful life of the sealing gaskets. Furthermore, the piston and cylinder arrangement permits accurate control over the pressure exerted on the extruder screw.
REFERENCES:
patent: 3908968 (1975-09-01), Bielfeldt et al.
patent: 4005641 (1977-02-01), Nussbaumer
Koch Robert J.
Krauss-Maffei A.G.
Simone Timothy F.
LandOfFree
Drive apparatus for a screw injection molding unit and a process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drive apparatus for a screw injection molding unit and a process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drive apparatus for a screw injection molding unit and a process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1191723