Temperature control device for a shaping tool and method of controlling same

Patent metadata

Field	Value
Publication number	US-9718219-B2
Application number	US-201414171964-A
Country	US
Kind code	B2
Filing date	Feb 4, 2014
Priority date	Feb 4, 2013
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

A method of temperature control of a shaping tool or components of a shaping working machine is performed by a temperature control medium disposed in at least one temperature control branch of a temperature control system. A previously ascertained relationship between geometrical data of the at least one temperature control branch and through-flow amounts of the temperature control medium is provided, and a reference through-flow amount is set by the previously ascertained relationship for the geometrical data of the at least one temperature control branch.

First claim

The invention claimed is:

1. A method of controlling a temperature of a shaping tool or components of a shaping working machine via a temperature control medium flowing through at least one temperature control branch of a temperature control system, said method comprising:
providing a previously ascertained relationship between geometrical data of the at least one temperature control branch and through-flow amounts of the temperature control medium; and
setting a reference through-flow amount based on the previously ascertained relationship for the geometrical data of the at least one temperature control branch;
wherein the previously ascertained relationship is expressed by Reynolds numbers, each of the Reynolds numbers being predetermined, and the reference through-flow amount being determined on the basis of the respective predetermined Reynolds number.

2. The method as set forth in claim 1 , wherein the geometrical data include at least a diameter—or in the case of non-circular cross-sections a characteristic dimension equivalent to the diameter—of a passage of the at least one temperature control branch.

3. The method as set forth in claim 1 , wherein said setting the reference through-flow amount comprises setting the through-flow amount such that the resulting Reynolds number is greater than or equal to the predetermined Reynolds number.

4. The method as set forth in claim 1 , wherein a temperature of the temperature control medium is taken into consideration for expressing the previously ascertained relationship by Reynolds numbers.

5. The method as set forth in claim 1 , further comprising measuring a relationship between mean temperature differences in at least one temperature control branch and through-flow amounts of the temperature control medium, and wherein said setting the reference through-flow amount is at least partly based on the measured relationship between mean temperature differences of the at least one temperature branch and the through-flow amounts.

6. The method as set forth in claim 5 , wherein said setting the reference through-flow amount comprises:
determining a first through-flow amount based only on the previously ascertained relationship between geometrical data and through-flow amounts,
determining a second through-flow amount based only on the measured relationship between mean temperature differences and through-flow amounts, and
setting the maximum of the first through-flow amount and the second through-flow amount as the reference through-flow amount for the temperature control medium.

Assignees

• Engel Austria Gmbh

Inventors

• Raschke Florian
• Giessauf Josef

Classifications

• B29C45/78 Primary

  of temperature · CPC title

• B29C2945/76531

  Temperature · CPC title

• B29C2945/76782

  temperature control fluids · CPC title

• B29C45/7306 Primary

  Control circuits therefor · CPC title

• B29C2945/76545

  Flow rate · CPC title