Valve device for at least one liquid plastic component

Patent metadata

Field	Value
Publication number	US-10850896-B2
Application number	US-201615740931-A
Country	US
Kind code	B2
Filing date	Jun 24, 2016
Priority date	Jul 3, 2015
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

A valve mechanism for at least one liquid plastic component or liquid plastic, includes a closure device that includes a needle to be pressed against a seat in order to close a valve opening in the valve mechanism. The needle and/or seat is designed or mounted in such a way as to be resilient.

First claim

The invention claimed is:

1. A valve device for at least one liquid plastic component or liquid plastic, comprising:
a closure device including a seat and a needle to be pressed against the seat for closing a valve opening of the valve device, the needle being movable relative to the seat in a closing direction to a first closed position in which the needle contacts the seat without any pressing force, a second closed position beyond the first closed position in which the needle is pressed against the seat with a first pressing force, and a third closed position beyond the second closed position in which the needle is over-pressed against the seat with a second pressing force greater than the first pressing force;
a sensor for monitoring at least one of (i) a position of the needle, (ii) a position of the seat, (iii) a needle mounting, and (iv) a seat mounting, and generating a status signal indicating whether the needle is positioned relative to the seat in the first closed position, the second closed position, or the third closed position based on the monitoring;
an evaluation device for receiving the status signal from the sensor and determining a characteristic of an operation of the closure device based on the status signal;
wherein at least one of the needle and the seat is adapted to be yielding or mounted yieldingly.

2. The valve device as set forth in claim 1 , wherein at least a portion of at least one of the needle and the seat comprise plastic.

3. The valve device as set forth in claim 2 , wherein the plastic of the at least one of the needle and the seat is at least partially elastically deformable.

4. The valve device as set forth in claim 2 , wherein the plastic of the at least one of the needle and the seat is PEK.

5. The valve device as set forth in claim 2 , wherein the plastic of the at least one of the needle and the seat is PEEK.

6. The valve device as set forth in claim 1 , wherein at least one of the needle and the seat is mounted yieldingly by a respective mounting, wherein the mounting has a force storage member or a deformable portion.

7. The valve device as set forth in claim 6 , wherein the mounting has a force storage member or an elastically deformable portion.

8. The valve device as set forth in claim 1 , wherein the sensor is configured to perform contact-less monitoring.

9. The valve device as set forth in claim 8 , wherein the evaluation device stores at least two positions characteristic of predetermined closure states of the closure device.

10. A metering valve for providing a metered discharge of at least one liquid plastic component or liquid plastic, the metering valve comprising the valve device as set forth in claim 1 .

11. The metering valve as set forth in claim 10 , wherein a discharge opening of the metering valve is closeable by the valve device.

12. The metering valve as set forth in claim 10 , further comprising a recirculation line, wherein the valve device is configured to close an intake opening of the recirculation line.

13. A metering device comprising:
a storage container for liquid plastic or at least one liquid plastic component; and
the metering valve as set forth in claim 10 connected to the storage container.

14. The metering device as set forth in claim 13 , wherein the valve device of the metering valve is a first valve device, further comprising a second valve device in a recirculation line.

Assignees

• Henkel Ag & Co Kgaa

Inventors

• Schwabl Christian
• Metzler Mario

Classifications

• F16K25/00

  Details relating to contact between valve members and seats (movement of valve members other than for opening and closing F16K29/00) · CPC title

• B29C45/28

  Closure devices therefor · CPC title

• B29C45/23 Primary

  Feed stopping equipment · CPC title

• B29C45/231

  Needle valve systems therefor · CPC title

• B29B7/582 Primary

  for discharging, e.g. doors · CPC title