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| Anti-infection and toxin elimination device |
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| Method of making a headliner and the like |
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| Method for forming plastic molded panels with inserts |
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Cooling tube with porous insert
| Details |
Inventors: Neter, Witold; Niewels, Joachim Johannes; Unterlander, Richard Matthias; Uracz, Tomasz; Romanski, Zbigniew;
Assignee: Husky Injection Molding Systems, LTD (Bolton, CA)
Primary Examiner: Heitbrink; Tim
Assistant Examiner:
Attorney, Agent or Firm: Kotula; Steven J.
An injection-molding machine cooling tube, which cools molded plastic parts, includes a porous cooling tube having an outer surface and an inner surface. Preferably, the porous cooling tube has a porosity in the range of 3-20 microns. A cooling fluid passageway is preferably disposed adjacent the porous cooling tube outer surface and is configured to carry a cooling fluid to extract heat from the porous cooling tube. Fluid flow structure, preferably a vacuum, is configured to cause a molded plastic part inside the porous cooling tube to expand into contact with at least a portion of the inner surface of the porous cooling tube. |
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DETAILED DESCRIPTION The present invention will now be described with respect to embodiments in which a porous cooling tube is used in a plastic injection molding machine, although the present invention is equally applicable to any technology in which, following part formation, cooling of that part is undertaken by a cooling tube or the like.
For example, the present invention can find application in a part transfer mechanism from an injection molding machine and a blow-molding machine.
FIG.
1 shows a typical injection molding machine 10 capable of co-operating with a device supporting the cooling tube of the present invention.
During each injection cycle, the molding machine 10 produces a number of plastic preforms (or parisons) corresponding to the number of mold cavities defined by complementary mold halves 12, 14 located within the machine 10.
The injection-molding machine 10 includes, without specific limitation, molding structure such as a fixed platen 16 and a movable platen 18.
In operation, the movable platen 18 is moved relative to the fixed platen 16 by means of stroke cylinders (not shown) or the like.
Clamp force is developed in the machine, as will readily be appreciated, through the use of tie bars 20, 22 and a machine clamping mechanism (not shown) that typically generates a mold clamp force (i.
e.
closure tonnage) using a hydraulic system.
The mold halves 12, 14 together constitute a mold generally having one or more mold cavitities 22, 24, with the mold halves 12, 14 each located in one of the movable platen 14 and the fixed platen 16.
A robot 26 is provided, adjacent the fixed 16 and movable platen 14, to carry an end of arm tool (EOAT) 28, such as a take-out plate.
The take-out plate 28 contains a number of preform cooling tubes 30 at least corresponding in number to the number of preforms 32 produced in each injection cycle, and may be a multiple thereof.
In use, in a mold open position (as shown in FIG.
1), the robot 26 moves the take-out plate into alignment with, typically, a core side of the mold and then waits until molded articles (e
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