Method and device for applying lubrication or separation liquid to glass-forming machine

• US 4,391,620 A
• Filed: 02/17/1981
• Issued: 07/05/1983
• Est. Priority Date: 02/28/1980
• Status: Expired due to Fees

• Current Assignee: Hermann Heye
• Original Assignee: Hermann Heye
• Inventors: Geisel, Gerhard
• Primary Examiner(s): Fisher, Richard V.
• Application Number:
  US06/235,137
• Time in Patent Office: 868 Days
• Field of Search: 65/160, 65/164, 65/170, 65/26, 239/99, 239/274, 184/6.26
• US Class Current: 65/26
• CPC Class Codes: C03B 40/027 Apparatus for applying lubricants to glass shaping moulds or tools
• CPC Class Codes: C03B 7/10 Cutting-off or severing the glass flow with the aid of knives or scissors or non-contacting cutting means, e.g. a gas jet; Construction of the blades used
• CPC Class Codes: C03B 7/16 using deflector chutes

Abstract

A device for an intermittent application of a lubrication or a separation liquid to a component part of a glass-forming machine engageable with molten glass, includes an intermittently driven high-pressure pump and a spraying nozzle connected to the pump by a pressure conduit to apply momentarily a cone of atomized lubrication or separation liquid on the machine part at a pressure of at least 100 bars.

Claims

1. A method of an intermittent application of a lubrication or separation liquid without admixture of a carrier gas on at least one part of a glass-forming machine prior to its contact with the processed molten glass, such as shearing blades for shearing gobs off a glass strand, a gravity tube or a chute for guiding glass gobs, a mold, a mold part or a press plunger, comprising the steps of momentarily compressing the lubrication or separation liquid to a pressure exceeding 100 bar;

then atomizing the compressed liquid; and

applying a cone of the atomized liquid onto said machine part.

2. A method as defined in claim 1, wherein said compressing of the lubrication or separation liquid takes place in a pressing pump which includes an inlet port connected to a low-pressure conduit, said low-pressure conduit being branched into a feeding conduit including a feeding pump, and a return conduit connected via a pressure-limiting valve to a tank.

3. A method as defined in claim 1, wherein said compressing of the lubrication and separation liquid takes place in a pressing pump driven by a pneumatic motor.

4. A method as defined in claim 3, wherein said pneumatic motor includes a cylinder-and-piston unit having a piston rod in driving contact with at least one pressing pump.

5. A method as defined in claim 1, wherein said compressing of the lubrication and separation liquid takes place in a pressing pump driven by a camshaft.

6. A method as defined in claim 5, wherein said camshaft is coupled to a variable-speed electric driving motor.

7. A method as defined in claim 6, including a plurality of series-connected camshafts for driving a plurality of pressing pumps.

8. A method as defined in claim 7, further including at least one transmission gear respectively coupled between two camshafts.

9. A device for an intermittent application of a lubrication or separation liquid on at least one part of a glass-forming machine prior to its contact with the processed molten glass, such as shearing blades for shearing gobs off a glass strand, a gravity tube or a chute for guiding glass gobs, a mold, a mold part or a press plunger, the device comprising at least one pressing pump for delivering the lubricating or separating liquid at a pressure exceeding 100 bar;

a means for intermittently driving said pump;

a high-pressure conduit connected to the outlet of said pump;

a spraying nozzle connected to said high-pressure conduit for applying a cone of atomized lubrication or separation liquid on said machine part, and wherein said driving means includes a solenoid having an armature in driving connection with said pressing pump, a discharging circuit including a series connection of a capacitor, of a winding of said solenoid and of an electrical controllable switching element, a power-supply circuit for charging said capacitor, and an electrical control circuit for intermittently triggering the switching element in said discharging circuit.

10. A device as defined in claim 9, wherein said power-supply circuit includes a rectifying circuit and a voltage doubler connected to a secondary winding of a transformer.

11. A device as defined in claim 9, wherein at least two of said power-supply circuits are connected in parallel to the secondary winding of a transformer, each of said power-supply circuits charging one of said capacitors.

12. A device as defined in claim 9, including a plurality of solenoids for driving a corresponding plurality of pressing pumps, the windings of the solenoids being connected in parallel in said discharging circuit.

13. A device as defined in claim 9, wherein said switching element in the discharging circuit is a thyristor having a control gate connected to said control circuit.

14. A device as defined in claim 9, wherein said power-supply circuit and said control circuit are galvanically separated one from the other by a coupling device such as an optoelectric coupler, a relay contact or a trigger transformer.

15. A device as defined in claim 9, wherein said control circuit includes a control element such as a switch or a programmable computing device adpated for controlling a plurality of said control elements according to a predetermined program or a proximity sensor to be influenced by a moving element of said glass-forming machine to initiate the actuation of respective control elements when said part of the glass-forming machine is in an optimum spraying position relative to said spraying nozzle.

16. A device as defined in claim 9, wherein said control circuit includes a control element in the form of a pushbutton switch.