Molding system having conduits having conically-shaped matable distal ends, amongst other things

Information

  • Patent Application
  • 20080089976
  • Publication Number
    20080089976
  • Date Filed
    October 12, 2006
    18 years ago
  • Date Published
    April 17, 2008
    16 years ago
Abstract
Disclosed is: (i) a component of a molding system, including a first conduit having a conically-shaped first-conduit distal end being matable with a conically-shaped second-conduit distal end of a second conduit of the molding system, (ii) a molding system, including the first conduit and the second conduit, (iii) a molding system, including a barrel having a conically-shaped first-conduit distal end, and a barrel head having a conically-shaped second-conduit distal end being matable with the conically-shaped first-conduit distal end, and (iv) an extruder, including a barrel having a conically-shaped first-conduit distal end, and a barrel head having a conically-shaped second-conduit distal end being matable with the conically-shaped first-conduit distal end, amongst other things.
Description

BRIEF DESCRIPTION OF THE DRAWINGS

A better understanding of the exemplary embodiments of the present invention (including alternatives and/or variations thereof) may be obtained with reference to the detailed description of the exemplary embodiments of the present invention along with the following drawings, in which:



FIG. 1 is a cross-sectional view of a component of a molding system according to the first exemplary embodiment (which the preferred embodiment);



FIGS. 2A and 2B are a cross-sectional views of the component of FIG. 1 and of a component of a molding system according to a second exemplary embodiment, respectively; and



FIG. 3 is a schematic representation of a molding system and of an extruder having the component 2 and/or 3 of FIGS. 1 and/or 2A and 2B, respectively.





The drawings are not necessarily to scale and are sometimes illustrated by phantom lines, diagrammatic representations and fragmentary views. In certain instances, details that are not necessary for an understanding of the embodiments or that render other details difficult to perceive may have been omitted.


DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS


FIG. 1 is a cross-sectional view of a component 2 of a molding system 100 (depicted in part, and hereafter referred to as the “system 100”) according to the first exemplary embodiment. The component 2 includes, amongst other things, a first conduit 6 that has a conically-shaped end 8 (at least partially conically shaped; hereafter referred to as the “end 8”). The end 8 is matable with a conically-shaped end 12 (hereafter referred to as the “end 12”) of a second conduit 10 of the system 100.


Preferably, the first conduit 6 includes a barrel 7, and/or the second conduit 10 includes a barrel head 11. The first conduit 6 defines a (preferably, central) channel 14 that extends through the first conduit 6. The second conduit 10 defines a (preferably, central) passageway 16 that extends through the second conduit 10. The ends 8, 12 include a frustum-shaped distal end that is a frustum of a right circular cone. The ends 8, 12 include a chamfered surface and/or a beveled surface. The first conduit 6 is attachable to the second conduit 10, preferably by way of bolts 18. [0018] The channel 14, of the conduit 6, extends through the conduit 6 and is, preferably, cylindrical. The conduit 6 forms a chamfer at the end of the channel 14. The chamfer is also called a conical seat. Preferably, the first conically-shaped end 8 and the second conically-shaped end 12 are directly contactable with each other.


The barrel head 11 has an egress end 34 that is connectable to a machine nozzle (not depicted), and the machine nozzle is either connected to a mold 28 (depicted in FIG. 3) or to a hot runner 97 (depicted in FIG. 3). If the system 100 is used to mold a metallic molding material, then a liner 30 is inserted into the barrel 7. The liner 30 is, preferably, made of Stellite™ supplied by the Deloro Stellite Company (www.stellite.com) located in Goshen, Ind., USA. The barrel 7 is made of Inconel™ supplied by the Special Metals Corporation located in Huntington, W. Va., USA (www.specialmetals.com). A groove 38 is formed on an outer surface 39 of the barrel 7, and the groove 38 receives a heating wire (not depicted); alternatively, a heading band is coupled to the outer surface 39 and the groove 38 is not used.


The system 100, preferably, is a metal molding system that is used to process a metallic molding material, such as an alloy of magnesium, zinc, aluminum, etc.


Preferably, the first conduit 6 defines a groove 37 located on a conical surface of the first conduit 6 (or alternatively the second conduit 10). The groove 37 permits a smaller area at the interface which then permits higher contact pressures at the interface between the conduits 6, 10.



FIGS. 2A and 2B are cross-sectional views of the component 2 and of a component 3 both of which are usable in the system 100, respectively. The component 3 is in accordance with the second exemplary embodiment. To facilitate an understanding of the second exemplary embodiment, elements of the second exemplary embodiment (that are similar to those of the first exemplary embodiment) are identified by similar reference numerals. Preferably, the end 8 defines an apex angle 22 that ranges from about 40 degrees to about 90 degrees. Preferably, the apex angle 22 is about 70 degrees. The end 12 defines an apex angle 20 ranging from about 40 degrees to about 90 degrees. Preferably, the apex angle 20 is about 70 degrees.


According to component 2, the end 8 extends inwardly (from the conduit 6) and the end 12 extends outwardly or away from (from the conduit 10). According to component 3, the end 8 extends outwardly or away from (from the conduit 6) and end 12 extends inwardly (from the conduit 10).


The system 100 includes, amongst other things: (i) the first conduit 6 that has the end 8, and (ii) the second conduit 10 that has the end 12 that is matable with the end 8.



FIG. 3 is a schematic representation of the system 100 and of an extruder 9 having the component 2 and/or 3 (depicted as the barrel head and as the barrel of the extruder) of FIGS. 1 and/or 2A and/or 2B, respectively. Preferably, the system 100 includes amongst other things: (i) a stationary platen 20 that is configured to support a stationary mold portion 24 of a mold 28, (ii) a movable platen 22 that is configured to be movable relative to the stationary platen 20; the movable platen 22 is configured to support a movable mold portion 26 of the mold 28, and (iii) an extruder 9. The extruder 9 includes, amongst other things: (i) the barrel 7 that has the end 8, and (ii) the barrel head 11 that has the end 12 that is matable with the end 8. The extruder 9 may be sold and supplied separately from the system 100. A hopper 80 is attached to a feed throat of the extruder 9 and is used to feed pellets of a moldable molding material 51 to the extruder 9. A screw 82 is disposed in the extruder 9, and the screw 82 is connected to a screw drive 84. The screw drive 84 drives the screw 82, and the screw 82 in turn processes (heats, etc) the material 51 and converts the material 51 into the (molten) molding material 50. A machine nozzle 86 connects the extruder 9 to the mold 28 so that the molten molding material 50 may be conveyed from the extruder 9 to the cavity defined by the mold 28.


Preferably, the system 100 further includes, amongst other things, tangible subsystems, components, sub-assemblies, etc, that are known to persons skilled in the art (these items are not depicted and not described in detail since they are known). These other things may include: (i) a hot runner 97 (used if required) that is mounted to the stationary platen 20 and the stationary mold portion 24 is then mounted to the hot runner 97 instead of being mounted to the stationary platen 20, (ii) tie bars (not depicted) that operatively couple the platens 20, 22 together, (iii) a clamping mechanism (not depicted) coupled to the tie bars and used to generate a clamping force that is transmitted to the platens 20, 22 via the tie bars (so that the mold 28 may be forced to remain together while a (molten) molding material 50 is being injected in to the mold 28), (iv) a mold break force actuator (not depicted) coupled to the tie bars and used to generate a mold break force that is transmitted to the platens 20, 22 via the tie bars (so as to break apart the mold 28 once an article has been molded in the mold 28), (v) a platen stroking actuator (not depicted) coupled to the movable platen 22 and used to move the movable platen 22 away from the stationary platen 20 so that the molded article may be removed from the mold 28, (vi) hydraulic and/or electrical control equipment, and (vii) a controller (not depicted) that is operatively coupled to the system 100 so as to control and coordinate the processes associated with the system 100.


The description of the exemplary embodiments provides examples of the present invention, and these examples do not limit the scope of the present invention. It is understood that the scope of the present invention is limited by the claims. The exemplary embodiments described above may be adapted for specific conditions and/or functions, and may be further extended to a variety of other applications that are within the scope of the present invention. Having thus described the exemplary embodiments, it will be apparent that modifications and enhancements are possible without departing from the concepts as described. It is to be understood that the exemplary embodiments illustrate the aspects of the invention. Reference herein to details of the illustrated embodiments is not intended to limit the scope of the claims. The claims themselves recite those features regarded as essential to the present invention. Preferable embodiments of the present invention are subject of the dependent claims. Therefore, what is to be protected by way of letters patent are limited only by the scope of the following claims:

Claims
  • 1. A component of a molding system, comprising: a first conduit having a first conically-shaped end being matable with a second conically-shaped end of a second conduit of the molding system.
  • 2. The component of claim 1, wherein the first conduit forms a chamfer at the end of a channel, the channel extends through the first conduit.
  • 3. The component of claim 1, wherein the first conically-shaped end and the second conically-shaped end are directly contactable with each other.
  • 4. The component of claim 1, wherein the first conduit includes a barrel.
  • 5. The component of claim 1, wherein the second conduit includes a barrel head.
  • 6. The component of claim 1, wherein the first conduit defines a channel extending through the first conduit.
  • 7. The component of claim 1, wherein the second conduit defines a passageway extending through the second conduit.
  • 8. The component of claim 1, wherein the first conduit is attachable to the second conduit.
  • 9. The component of claim 1, wherein the first conically-shaped end defines an apex angle ranging from about 40 degrees to about 90 degrees.
  • 10. The component of claim 1, wherein the first conically-shaped end defines an apex angle of about 70 degrees.
  • 11. The component of claim 1, wherein the second conically-shaped end defines an apex angle ranging from about 40 degrees to about 90 degrees.
  • 12. The component of claim 1, wherein the second conically-shaped end defines an apex angle of about 70 degrees.
  • 13. The component of claim 1, wherein the first conically-shaped end extends inwardly.
  • 14. The component of claim 1, wherein the second conically-shaped end extends outwardly.
  • 15. The component of claim 1, wherein the first conically-shaped end extends outwardly.
  • 16. The component of claim 1, wherein the second conically-shaped end extends inwardly.
  • 17. A molding system, comprising: a first conduit having a first conically-shaped end; anda second conduit having a second conically-shaped end being matable with the first conically-shaped end.
  • 18. A molding system, comprising: a stationary platen configured to support a stationary mold portion of a mold;a movable platen configured to be movable relative to the stationary platen and configured to support a movable mold portion of the mold; andan extruder, including: (i) a first conduit having a first conically-shaped end, and (ii) a second conduit having a second conically-shaped end being matable with the first conically-shaped end.
  • 19. The molding system of claim 18, wherein: the first conduit also has a barrel defining the first conically-shaped end; andthe second conduit also has a barrel head defining the second conically-shaped end.
  • 20. An extruder, comprising: a first conduit having a first conically-shaped end; anda second conduit having a second conically-shaped end being matable with the first conically-shaped end.
  • 21. The extruder of claim 20, wherein: the first conduit also has a barrel defining the first conically-shaped end; andthe second conduit also has a barrel head defining the second conically-shaped end.
  • 22. A hot runner, comprising: a first conduit having a first conically-shaped end; anda second conduit having a second conically-shaped end being matable with the first conically-shaped end.
  • 23. A method, comprising: shaping a first conduit of a molding system, the first conduit having a first conically- shaped end being matable with a second conically-shaped end of a second conduit of the molding system.
RELATED APPLICATIONS

Similar subject matter is discussed in the related applications entitled: (i) BARREL HEAD OF EXTRUDER OF MOLDING SYSTEM, BARREL HEAD HAVING OUTER AND INNER PORTIONS, AMONGST OTHER THINGS (Applicant's reference number H-1011-0-US), and (ii) MOLDING SYSTEM INCLUDING BODY OVERLAPPING AND SEALING CONDUITS, AMONGST OTHER THINGS (Applicant's reference number H-1012-0-US).