JPH0334806A - Monitoring method for temperature of mold in rotary pressing device - Google Patents

Abstract

PURPOSE:To always and accurately measure temp. and to easily perform the step changing work at a time of exchanging a mold by setting an infrared radiation thermometer so that it is opposed to a mold passing through a specified station on a rotary locus and measuring the temp. of the mold passing through the station with the infrared radiation thermometer. CONSTITUTION:The direction of an infrared radiation thermometer 18 is set so as to be opposed to a mold 10 having reached the station on this side of a step reaching the decomposing/assembling station of a mold. In a rotary pressing device, the temp. of the mold 10 which is moved successively and intermittently by a rotating table is successively measured by the thermometer 18 in the station on this side of the step reaching the decomposing/assembling station. Thereby it is monitored whether the temp. of the respective molds 10 is proper. Since measurement of the temp. of the mold due to the thermometer 18 is performed in a state wherein it is not brought into contact with the molds, measurement error is made little. Further in the case of replacing the mold, the need for detaching the temp. measuring means is eliminated and the step replacing work is made easy.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for monitoring mold temperature in a rotary press machine.

(Prior Art) One type of press apparatus is a rotary press apparatus that performs a press operation while rotating a plurality of molds arranged on a rotary table at regular intervals. This rotary press device is widely used because it has the advantage of allowing operators to work in a fixed position while handling multiple molds, and requires only one piece of expensive accessory equipment such as mold disassembly/assembly equipment. It is being

By the way, in press equipment, it is necessary to control the temperature of the mold. For example, in the vulcanization molding of rubber products, if the temperature of the mold is not accurately controlled, the rubber vulcanization molding will not be performed properly, resulting in many defective products. It will happen.

On the other hand, in the above-mentioned rotary press apparatus, the temperature of the mold has conventionally been measured using a thermocouple thermometer to control the temperature. FIG. 3 shows an example of this, in which the tip of a thermocouple 102 is fixed to each mold 100 to measure the temperature of the mold lOO, thereby monitoring the temperature of each mold 100. That's what I do.

(Problem to be solved by the invention) However, in this method, when disassembling the mold 100 and pulling it out from the rotary table to the mold disassembly/assembly machine in the test station, the thermocouple cable is pulled. This tends to cause disconnection, and if such a disconnection occurs, temperature measurement becomes impossible and temperature control becomes impossible.

Therefore, as shown in FIG.
Temperature measurement is also carried out, for example, by bringing the tip of the thermocouple 102 into contact with the mold 100 pulled out from the rotary table at a mold disassembly/assembly station, without fixing the thermocouple to 00.

However, although this method does not cause the problem of thermocouple cable breakage, the temperature measurement value may vary depending on the way the thermocouple tip contacts the mold 100, or the mold temperature may be measured lower than the actual temperature. There were problems with temperature control, and temperature control could not be achieved accurately.

(Means for Solving the Problems) The present invention has been made to solve the above problems, and its purpose is to move a plurality of molds placed on the rotary table 4 into a circular rotation axis trace. In a rotary press device that performs a press operation while intermittently rotating along the rotation locus -L, an infrared radiation thermometer is set so as to face the mold passing through a specific station of the rotation locus -L, The temperature of each mold is monitored by measuring the temperature of the mold passing through the station with the infrared radiation thermometer.

(Operation and Effects of the Invention) As described above, the present invention uses an infrared radiation thermometer as the temperature measuring stage f, and measures the temperature of a mold that is intermittently moving in a circular trajectory at a specific station. It is something.

According to this method, temperature can always be accurately measured without causing temperature measurement errors or measurement errors due to thermocouple disconnection or poor contact. Moreover, with this method, the mold temperature can be measured without contact, making it easier to change the setup when replacing the mold.

In the case of the above method of measuring temperature by fixing a thermocouple to the mold, it is necessary to remove and attach the thermocouple when replacing the mold, making setup work troublesome, but this method eliminates this problem. As a result, product production efficiency is improved.
:The effect is produced.

(Example) Next, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 shows a rotary press device for vulcanization molding of rubber products, in which a plurality of molds 10 are moved intermittently by a rotary table along a circular rotation trajectory. There is.

Reference numeral 12 denotes an injection cylinder, which injects plasticized rubber material into the cavity of the mold lO through a nozzle 14 at its tip. The mold lO injected with the rubber material then moves intermittently on a circular trajectory-1 while being kept under pressure and heat, and then passes through the mold disassembly/assembly station at the mold disassembly/assembly station where it has made almost one revolution. It is pulled out to the 16 side, where the mold is broken down and the amount of molded comb inside is taken out. At the same time, the metal fittings are stored inside the mold 10, and then they are brought to the injection station again, where they are injected with rubber material by the injection cylinder 12.

18 is an infrared radiation thermometer, and as shown in Figure 2, it reaches the mold disassembly/assembly station - its orientation is set so that it faces the mold 10 that has reached the station in front of it. and is set. In FIG. 2, 20 is a heating plate.

In the rotary press apparatus of this example, the temperature of the mold 10 that is moved intermittently and sequentially by the rotary table is successively measured by an infrared radiation thermometer 18 at a station before F of the mold disassembly/roughening station. , each mold 10
The temperature of the apricot is monitored to see if it is at the appropriate temperature.

Therefore, the measurement of the mold temperature by the infrared radiation thermometer 18 is as follows:
Since it is performed without contacting the mold, there are fewer measurement errors compared to conventional temperature measurement methods using thermocouples.
Further, when replacing the mold 10, there is no need to attach or detach the temperature measuring means, which simplifies the setup change work.

Hereinafter, the embodiment of the present invention has been described in detail, but this is only one embodiment of the present invention, and the present invention may be modified in various ways based on the knowledge of those skilled in the art without departing from the above. It is effective in its evil form.

[Brief explanation of drawings]

FIG. 1 is a diagram 151 showing a method for monitoring mold temperature in a rotary press apparatus according to an embodiment of the present invention, and FIG. 2 is an enlarged view of the main parts thereof. Are figures 3 and 4 human? FIG. 2 is an explanatory diagram of a conventional mold temperature monitoring method. 10: Mold worker 8: Infrared radiation thermometer 2 Figure

Claims (1)

[Claims] In a rotary press device that performs a pressing operation while rotating a plurality of molds placed on a rotary table intermittently along a circular rotational axis trace, a rotary press machine that faces a mold that passes through a specific station on the rotation trajectory In a rotary press device, the temperature of each mold is monitored by setting an infrared radiation thermometer in this way and measuring the temperature of the mold passing through the station with the infrared radiation thermometer. Mold temperature monitoring method.