WO2000056673A1 - Temperature control system for a glassware machine - Google Patents

Temperature control system for a glassware machine Download PDF

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Publication number
WO2000056673A1
WO2000056673A1 PCT/US2000/004531 US0004531W WO0056673A1 WO 2000056673 A1 WO2000056673 A1 WO 2000056673A1 US 0004531 W US0004531 W US 0004531W WO 0056673 A1 WO0056673 A1 WO 0056673A1
Authority
WO
WIPO (PCT)
Prior art keywords
mold
plunger
valve
fluid
controller
Prior art date
Application number
PCT/US2000/004531
Other languages
French (fr)
Inventor
Terry E. Hartman
Herbert C. Kroh
David E. Crots
Original Assignee
Libbey Glass Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Libbey Glass Inc. filed Critical Libbey Glass Inc.
Publication of WO2000056673A1 publication Critical patent/WO2000056673A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C03B11/16—Gearing or controlling mechanisms specially adapted for glass presses
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C03B11/12—Cooling, heating, or insulating the plunger, the mould, or the glass-pressing machine; cooling or heating of the glass in the mould
    • C03B11/125—Cooling
    • C03B11/127—Cooling of hollow or semi-hollow articles or their moulds
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B9/00—Blowing glass; Production of hollow glass articles
    • C03B9/30—Details of blowing glass; Use of materials for the moulds
    • C03B9/40—Gearing or controlling mechanisms specially adapted for glass-blowing machines
    • C03B9/41—Electric or electronic systems

Definitions

  • the present invention relates generally to a temperature control system for a glassware machine. More specifically, the invention is directed to a temperature control system for fluid cooling a plunger and a mold of a glassware machine using a controller that is in communication with sensors and a supply of fluid.
  • the present invention is directed to a temperature control system for a glassware machine having a plunger and a mold that are in communication with a supply of fluid such as air.
  • the system includes a controller. Devices for sensing the temperatures of the plunger and the mold are in communication with the controller.
  • the system further includes a device for regulating the flow of fluid from the supply of fluid to the plunger and the mold.
  • the regulation device is in communication with the controller.
  • a primary object of the present invention is to provide a temperature control system that accurately and efficiently maintains the temperatures of a plunger and a mold of a glassware machine.
  • FIG. 1 is a schematic view of a temperature control system for a glassware machine according to the present invention.
  • the temperature control system of the present invention is indicted generally in the drawings by the reference number "10".
  • the system 10 includes a conventional glassware machine 12 having a plunger 14 and a mold 16.
  • the plunger 14 is operatively connected to a pressing cylinder 18.
  • the mold 16 is positioned on a platform 20.
  • the system 10 includes a controller C.
  • the controller C can be a programmable computer.
  • the controller C is a conventional Proportional, Integral and Derivative (PID) microprocessor.
  • the system 10 includes a thermal sensor 22 for sensing the temperature of the plunger 14.
  • An example of a thermal sensor 22 that can be used in the present invention is a conventional infrared sensor or "camera”.
  • the thermal sensor 22 transfers outputs to the controller C through line 24.
  • the system 10 further includes a thermal sensor 26 for sensing the temperature of the mold 16.
  • the thermal sensor 26 can be the type described above in relation to the thermal sensor 22.
  • the thermal sensor 26 transfers outputs to the controller C through line 28.
  • the system 10 includes a supply of fluid S such as a tank or other container.
  • the supply of fluid S is a conventional tank containing air. It will be appreciated by those skilled in the art that other types of fluid can be used in the system 10 depending on the application.
  • the supply of fluid S is connected to a fluid regulating valve 30 by a line 32.
  • the valve 30 is a conventional pneumatic valve.
  • a conventional shut-off valve 34 is positioned between the supply of fluid S and the valve 30.
  • the valve 30 includes a plunger valve 36 that is connected to the plunger 14 by a line 38.
  • the plunger valve 36 can be opened or closed to regulate the flow of fluid from the supply of fluid S to the plunger 14.
  • the valve 30 further includes a mold valve 40 that is connected to both sides of the mold 16 by a line 42. The mold valve can be opened or closed to regulate the flow of fluid from the supply of fluid S to the mold 16.
  • the controller C is in communication with the plunger valve 36 and the mold valve 40 through a line 44.
  • the controller C can send outputs through the line 44 to the plunger valve 36 and the mold valve 40 to cause the valves to open or close to regulate the flow of fluid through the respective valves.
  • a gob of molten glass (not shown) is deposited in the mold 16.
  • the plunger 14 is pressed into the mold 16 by the pressing cylinder 18.
  • the plunger 14 engages the gob of glass to form glassware in the mold 16.
  • the plunger 14 and the mold 16 which are made of metal, increase in temperature due to heat transfer from the gob of molten glass.
  • the thermal sensor 22 senses the temperature of the plunger 14 and transfers outputs through line 24 to the controller C.
  • the thermal sensor 26 senses the temperature of the mold 16 and transfers outputs through line 28 to the controller C.
  • the controller C processes the output data from the thermal sensors 22 and 26 and sends outputs through line 44 to the plunger valve 36 and the mold valve 40.
  • the plunger valve 36 and the mold valve 40 This causes the plunger valve 36 and the mold valve 40 to either open or close. If the plunger valve 36 is open, fluid from the supply of fluid S is allowed to flow through line 32, the valve 30 and the line 38 to the plunger 14 to cool the plunger. If the mold valve 40 is open, fluid from the supply of fluid S is allowed to flow through the line 32, the valve 30 and the line 42 to the mold 16 to cool the mold. As it will be appreciated, the temperatures of the plunger 14 and the mold 16 will increase if the plunger valve 36 and the mold valve 40, respectively, are closed. As stated above, the temperatures of the plunger 14 and the mold 16 should be maintained at about 900° F (482.2° C).
  • the system 10 of the present invention accurately and efficiently maintains the temperatures of the plunger 14 and the mold 16 within ⁇ 2 to 4° F (-16.6 to -15.5° C) of a predetermined temperature such as about 900° F (482.2° C).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

A temperature control system (10) for maintaining the temperatures of a plunger (14) operated by a pressing cylinder (18) and a mold (16) located on a plarform (20) of a glassware machine (12). The system includes a controller (C) communicating with plunger and mold thermal sensors (22 and 26) via lines (24 and 28) for sensing the plunger and mold temperatures. The system further includes a supply (S) of fluid communicating with the plunger and the mold via lines (38 and 42). A shut-off valve (34) is placed in line (32) and a regulation valve (30) including plunger valve (36) and a mold valve (40) communicates with the controller via line (44) to regulate the flow of fluid from the supply of fluid to the plunger and the mold.

Description

TEMPERATURE CONTROL SYSTEM
FOR A GLASSWARE MACHINE BACKGROUND OF THE INVENTION The present invention relates generally to a temperature control system for a glassware machine. More specifically, the invention is directed to a temperature control system for fluid cooling a plunger and a mold of a glassware machine using a controller that is in communication with sensors and a supply of fluid.
It is important to maintain the temperatures of a plunger and a mold of a glass machine at about 900° F (482.2° C) during operation. Deviations in temperatures result in the manufacture of defective glassware.
In the past, the temperatures of the plunger and the mold have been maintained manually on a "trial and error" basis. It has been found that this prior art method results in the inaccurate and inefficient maintenance of temperatures. Therefore, there is a need for an improved temperature control system for a glassware machine.
SUMMARY OF THE INVENTION The present invention is directed to a temperature control system for a glassware machine having a plunger and a mold that are in communication with a supply of fluid such as air. The system includes a controller. Devices for sensing the temperatures of the plunger and the mold are in communication with the controller. The system further includes a device for regulating the flow of fluid from the supply of fluid to the plunger and the mold. The regulation device is in communication with the controller.
A primary object of the present invention is to provide a temperature control system that accurately and efficiently maintains the temperatures of a plunger and a mold of a glassware machine. Other objects and advantages of the present invention will become apparent to those skilled in the art upon a review of the following detailed description of the preferred embodiments and the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view of a temperature control system for a glassware machine according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The preferred embodiments and best mode ofthe present invention will now be described in detail with reference being made to the drawings. The temperature control system of the present invention is indicted generally in the drawings by the reference number "10". As shown schematically in Fig. 1 , the system 10 includes a conventional glassware machine 12 having a plunger 14 and a mold 16. The plunger 14 is operatively connected to a pressing cylinder 18. The mold 16 is positioned on a platform 20.
The system 10 includes a controller C. The controller C can be a programmable computer. In a preferred embodiment, the controller C is a conventional Proportional, Integral and Derivative (PID) microprocessor.
The system 10 includes a thermal sensor 22 for sensing the temperature of the plunger 14. An example of a thermal sensor 22 that can be used in the present invention is a conventional infrared sensor or "camera". The thermal sensor 22 transfers outputs to the controller C through line 24.
The system 10 further includes a thermal sensor 26 for sensing the temperature of the mold 16. The thermal sensor 26 can be the type described above in relation to the thermal sensor 22. The thermal sensor 26 transfers outputs to the controller C through line 28. As shown in Fig. 1 , the system 10 includes a supply of fluid S such as a tank or other container. In a preferred embodiment, the supply of fluid S is a conventional tank containing air. It will be appreciated by those skilled in the art that other types of fluid can be used in the system 10 depending on the application.
The supply of fluid S is connected to a fluid regulating valve 30 by a line 32. In a preferred embodiment, the valve 30 is a conventional pneumatic valve. However, it should be understood that other types of valves can be used depending on the type of fluid being conveyed in the system 10. A conventional shut-off valve 34 is positioned between the supply of fluid S and the valve 30.
The valve 30 includes a plunger valve 36 that is connected to the plunger 14 by a line 38. The plunger valve 36 can be opened or closed to regulate the flow of fluid from the supply of fluid S to the plunger 14. The valve 30 further includes a mold valve 40 that is connected to both sides of the mold 16 by a line 42. The mold valve can be opened or closed to regulate the flow of fluid from the supply of fluid S to the mold 16.
As shown in Fig. 1 , the controller C is in communication with the plunger valve 36 and the mold valve 40 through a line 44. The controller C can send outputs through the line 44 to the plunger valve 36 and the mold valve 40 to cause the valves to open or close to regulate the flow of fluid through the respective valves.
The operation and use of the system 10 will now be described. A gob of molten glass (not shown) is deposited in the mold 16. The plunger 14 is pressed into the mold 16 by the pressing cylinder 18. The plunger 14 engages the gob of glass to form glassware in the mold 16. During pressing, the plunger 14 and the mold 16, which are made of metal, increase in temperature due to heat transfer from the gob of molten glass. The thermal sensor 22 senses the temperature of the plunger 14 and transfers outputs through line 24 to the controller C. The thermal sensor 26 senses the temperature of the mold 16 and transfers outputs through line 28 to the controller C. The controller C processes the output data from the thermal sensors 22 and 26 and sends outputs through line 44 to the plunger valve 36 and the mold valve 40. This causes the plunger valve 36 and the mold valve 40 to either open or close. If the plunger valve 36 is open, fluid from the supply of fluid S is allowed to flow through line 32, the valve 30 and the line 38 to the plunger 14 to cool the plunger. If the mold valve 40 is open, fluid from the supply of fluid S is allowed to flow through the line 32, the valve 30 and the line 42 to the mold 16 to cool the mold. As it will be appreciated, the temperatures of the plunger 14 and the mold 16 will increase if the plunger valve 36 and the mold valve 40, respectively, are closed. As stated above, the temperatures of the plunger 14 and the mold 16 should be maintained at about 900° F (482.2° C).
It has been found that the system 10 of the present invention accurately and efficiently maintains the temperatures of the plunger 14 and the mold 16 within ± 2 to 4° F (-16.6 to -15.5° C) of a predetermined temperature such as about 900° F (482.2° C).
The above detailed description of the present invention is given for explanatory purposes. It will be apparent to those skilled in the art that numerous changes and modifications can be made without departing from the scope of the invention. Accordingly, the whole of the foregoing description is to be construed in an illustrative and not a limitative sense, the scope of the invention being defined solely by the appended claims.

Claims

CLAIMS We claim:
1. A temperature control system for a glassware machine comprising: a glassware machine including a plunger and a mold; a controller; means for sensing the temperature of said plunger in communication with said controller; means for sensing the temperature of said mold in communication with said controller; a supply of fluid in communication with said plunger and said mold; and means for regulating the flow of fluid from said supply of fluid to said plunger and said mold in communication with said controller.
2. The system of claim 1 , wherein said controller is a computer.
3. The system of claim 2, wherein said computer is a Proportional, Integral and Derivative (PID) microprocessor.
4. The system of claim 1 , wherein said means for sensing the temperature of said plunger consists of a thermal sensor.
5. The system of claim 4, wherein said thermal sensor is an infrared sensor.
6. The system of claim 1 , wherein said means for sensing the temperature of said mold consists of a thermal sensor.
7. The system of claim 6, wherein said thermal sensor is an infrared sensor.
8. The system of claim 1 , wherein said supply of fluid is a supply of air.
9. The system of claim 1 , wherein said means for regulating the flow of fluid consists of at least one valve.
10. The system of claim 9, wherein said at least one valve is a pneumatic valve having a plunger valve and a mold valve.
PCT/US2000/004531 1999-03-24 2000-02-23 Temperature control system for a glassware machine WO2000056673A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27547599A 1999-03-24 1999-03-24
US09/275,475 1999-03-24

Publications (1)

Publication Number Publication Date
WO2000056673A1 true WO2000056673A1 (en) 2000-09-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/004531 WO2000056673A1 (en) 1999-03-24 2000-02-23 Temperature control system for a glassware machine

Country Status (1)

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WO (1) WO2000056673A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1318111A2 (en) * 2001-12-05 2003-06-11 Emhart Glass S.A. Glass container forming machine for blowing of a parison
EP2333502A3 (en) * 2009-12-10 2011-11-09 Emhart Glass S.A. System and method for monitoring hot glass containers to enhance their quality and control the forming process
JP2012219011A (en) * 2011-04-12 2012-11-12 Emhart Glass Sa Closed loop blank mold temperature control system and method
US9671357B2 (en) 2009-12-10 2017-06-06 Emhardt Glass S.A. System and method for monitoring hot glass containers to enhance their quality and control the forming process
WO2018075199A1 (en) * 2016-10-18 2018-04-26 Owens-Brockway Glass Contaner Inc. Forming glass containers responsive to suspended parison elongation
IT201700053162A1 (en) * 2017-05-17 2018-11-17 Olivotto Glass Tech S P A METHOD FOR CHECKING THE BOX TEMPERATURES AND PUNCHING IN A STRAINING EQUIPMENT NEAR THE BLOW FOR THE MANUFACTURE OF CABLE GLASS ITEMS, AND THE SYSTEM USING THIS METHOD

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4368062A (en) * 1981-07-08 1983-01-11 Ball Corporation Glassware forming speed control system
US4528015A (en) * 1983-03-04 1985-07-09 Emhart Industries, Inc. Glass forming blank and plunger cooling

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4368062A (en) * 1981-07-08 1983-01-11 Ball Corporation Glassware forming speed control system
US4528015A (en) * 1983-03-04 1985-07-09 Emhart Industries, Inc. Glass forming blank and plunger cooling

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1318111A2 (en) * 2001-12-05 2003-06-11 Emhart Glass S.A. Glass container forming machine for blowing of a parison
EP1318111A3 (en) * 2001-12-05 2005-12-21 Emhart Glass S.A. Glass container forming machine for blowing of a parison
EP2333502A3 (en) * 2009-12-10 2011-11-09 Emhart Glass S.A. System and method for monitoring hot glass containers to enhance their quality and control the forming process
US8462203B2 (en) 2009-12-10 2013-06-11 Emhart Glass S.A. Method and system for monitoring and controlling a glass container forming process
US9036023B2 (en) 2009-12-10 2015-05-19 Emhart Glass S.A. Method and system for monitoring and controlling a glass container forming process
US9671357B2 (en) 2009-12-10 2017-06-06 Emhardt Glass S.A. System and method for monitoring hot glass containers to enhance their quality and control the forming process
JP2012219011A (en) * 2011-04-12 2012-11-12 Emhart Glass Sa Closed loop blank mold temperature control system and method
US9580345B2 (en) 2011-04-12 2017-02-28 Emhart Glass S.A. Closed loop blank mold temperature control system and method
WO2018075199A1 (en) * 2016-10-18 2018-04-26 Owens-Brockway Glass Contaner Inc. Forming glass containers responsive to suspended parison elongation
IT201700053162A1 (en) * 2017-05-17 2018-11-17 Olivotto Glass Tech S P A METHOD FOR CHECKING THE BOX TEMPERATURES AND PUNCHING IN A STRAINING EQUIPMENT NEAR THE BLOW FOR THE MANUFACTURE OF CABLE GLASS ITEMS, AND THE SYSTEM USING THIS METHOD

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