DE202016000872U1 - Device for checking the life of die casting and plastic molds - Google Patents

Abstract

Main claim to a ceramic head with two built-metal pins, which can be installed in a metal mold, especially in a die-casting mold, and causes an electrical closing contact in a flood of liquid metal.

Description

Druckgießvorrichtungen are for example from the EP 0 827 794 B1 known. Casting material, for example an aluminum or magnesium melt, can be pressed into the mold cavity of the die casting apparatus by means of a press-fit piston.

Die casting molds are subject to heavy wear during production due to the high pressures as well as the high flow speed and the high temperature of the casting medium. The mold manufacturer must provide a certain guarantee for his product, which is linked to several criteria as described above. On the other hand, the buyer of the form has little evidence of a failure of the mold or early wear, which can often lead to uselessness.

An effective control device for this problem is required here and therefore the reason for this utility model.

1st improvement:

A control device has the task to record important parameters during the entire production time, to save and to provide as required for the respective call.

2. List of control values:

• a) How often was the mold set up and removed on which die casting machine (which type of machine)?
• b) How many castings were produced at each time?
• c) What was the temperature of the mold during the production?
• d) What was the casting speed of the metal during mold filling?
• e) How many parts were produced on this mold in total in which time?

LIST OF REFERENCE NUMBERS

1

Frontansicht bewegliche Seite einer Druckgießmaschine

2

Bewegliche Seite mit Formhälfte 4)

3

Maschinensäule

4

Gießformhälfte

5

Metallübergang vom Einpressteil zur Form

6

Keramiksockel für Sensoren eingebaut in der Form 4)

7

Metallkontakt

8

Metallkontakt

9

Temperatursensor eingebaut im Metallkontakt 7)

10

Kabeldurchführung der Sensoren zum Verbindungsrohr

11

Verbindungsrohr zur elektronischen Auswertebox

12

Befestigungswinkel für Auswertebox

13

Auswertebox für die Signalverarbeitung

14

Steckverbindung der Sensorik zur Auswertebox

15

Flüssigmetall fließt Richtung Sensorsockel

3. Description Record A:

1

Front view of moving side of a die casting machine

2

Movable side with mold half 4 )

3

machine column

4

casting mold

5

Metal transition from the press-in part to the mold

6

Ceramic base for sensors installed in the mold 4 )

7

metal contact

8th

metal contact

9

Temperature sensor installed in metal contact 7 )

10

Cable bushing of the sensors to the connecting pipe

11

Connecting pipe to the electronic evaluation box

12

Mounting bracket for evaluation box

13

Evaluation box for signal processing

14

Plug connection of the sensors to the evaluation box

15

Liquid metal flows in the direction of the sensor base

4. Description:

The base of the control device consists of a round ceramic base see note A Pos. 6 ), in which two contact heads 7 ) and 8th ) are installed. These contact heads 7 ) and 8th ) have the task of establishing an electrical connection as soon as the liquid metal 15 ) in a mold filling the two heads washed over. In this case, a counting process (pulse) is triggered. However, this is only possible if the temperature sensor 9 ) in contact 7 ) reaches a certain temperature, the triggering threshold via a in the electronics box 13 ) located electronic circuit can be preprogrammed. Now that the two conditions have been created (metal temperature and metal connection), the now triggered pulse is stored as well as the actual metal temperature measured by the sensor 9 ) in the contact head 7 ). At the same time as the liquid metal 15 ) an electrical contact between contact 7 ) and 8th ) triggers the time is measured on the same time and thus releases another information - the metal velocity - which in turn in the electronics box 13 ) is stored circuit.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0827794 B1 [0001]

Claims (6)

Main claim to a ceramic head with two built-metal pins, which can be installed in a metal mold, especially in a die-casting mold, and causes an electrical closing contact in a flood of liquid metal. Claiming that liquid metal between the two metal contacts produces an electrical connection, which can be processed for further processing of machine functions. Claim that at least in one of the metal pins in the ceramic head, a temperature sensor is installed, which measures the currently pending temperature and can evaluate. Further claiming that over time measurement of the flowing metal of metal contact 7 ) to metal contact 8th ) the metal velocity can be measured. Additional claim that one of the contact pins is provided with a pressure sensor to measure the metal pressure in a mold at the mounting point of the measuring head can. Claim that the two pins 7 ) and 8th ) can be replaced by pressure sensors, the sensor head can also be used in the plastic field on plastic machines.

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