SU1523350A1 - Method and apparatus for determining process parameters of extruding articles by plunger extrusion method - Google Patents

Abstract

The invention relates to the woodworking industry. The purpose of the invention is to determine the optimal technological parameters and improve the quality of finished products. The method of determining the technological parameters is carried out by determining the technological parameters inside the molded product during its movement together with the movement of thermocouples or pressure sensors. A device for implementing the method includes a plunger 2, in which an L-shaped channel 7 is made, through which the reinforcement 6 passes. The thermocouples 4, together with the product 9 and the valve 6, are moved, while continuously measuring and recording the values of pressure and temperature in different sections of the product along its entire length. 2 sec. f-ly. 1 il.

Description

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They are realized by determining the techno logical parameters inside the molded product during its movement together with the movement of thermocouples or pressure sensors. A device for implementing the method includes a punch 2 in which an L-shaped channel 7 is made, through which the reinforcement 6 passes. The thermocouple 4 (or the pressure sensor) is mounted on

output end of hollow reinforcement 6. During the reciprocating movement of the punch 2, the press material is fed in portions into the heated matrix 3. In this case, the thermocouples 4 together with the product 9 and the reinforcement 6 are moved, while the values of pressure and temperature in different sections of products along its entire length. 2 sec. f-ly, 1 ill.

The invention relates to methods and devices for determining the technological parameters of the process of pressing articles from press materials, mainly from chip-adhesive masses, and can be applied in woodworking industry in the manufacture of molded products.

The purpose of the invention is to determine the optimal technological parameters and increase the quality of finished products.

The drawing shows a device for implementing a method for determining the technological parameters of the process of pressing products by the method of plunger extrusion.

The device consists of a pressure source 1 with pressure and temperature measuring instruments (not shown), a punch 2, a heated matrix 3, a thermocouple 4 (or a pressure sensor), heaters 5, a hollow reinforcement 6. In the punch 2, an L-shaped channel 7 is made through which the valve 6 passes through the floor. A thermocouple 4 (or a pressure sensor) is installed at the outlet end of the hollow reinforcement 6, and the wires 8 connecting the thermocouple 4 (or the pressure sensor) with measuring instruments pass inside the hollow reinforcement. In the matrix 3 is placed the sample 9.

The method is carried out as follows.

During the reciprocating movement of the punch 2, the press material is fed in portions into the heated matrix 3. At the same time, the thermopairs 4 (or pressure sensors) embedded in the upper part of the product, together with the sample article 9 and the reinforcement 6, in which the wires 8 are laid, Connecting thermocouple 4 (or pressure transducer) with instrumentation, move with the product. The pressing process is carried out with the following parameters: the temperature at the inlet to the die channel is 20-150 ° C, and at the output 120-300 ° C. At the same time, the temperature or pressure value in different sections of the product along its entire length and at different values of the pressing pressure and heating temperature are continuously recorded and recorded by self-recording devices. The magnitude of the pressure varies between 50-1500 kgc / cm.

The invention allows to determine the optimal technological parameters for the manufacture of molded products depending on the type and content of the binder, the geometrical dimensions of the product and the fractional composition of the filler, in addition, it allows to make a scientifically sound calculation and design of technological equipment for the manufacture of various molded products (pipes, boards and etc.). The invention provides high strength.

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Claims (2)

1. The method of determining the technological parameters of the process of pressing products by the method of plunger extrusion by measuring. temperature or pressure using thermocouples or pressure sensors and measuring instruments, characterized in that, in order to determine the optimum technological parameters and improve the quality of finished products, the technological parameters are determined inside the molded product during its movement along with the movement of thermocouples or sensors pressure. five 2. A device for determining the technological parameters of the extrusion molding process using a plunger extrusion method, including a punch, a heated matrix, heaters, a thermocouple or a pressure sensor, fittings, wires and measuring instruments, characterized in that, in order to determine the optimum technological parameters and improve the quality of the finished products, in the punch there is an L-shaped channel, in which there is an armature in the floor, at the output end of which there is a pressure sensor or a thermocouple, and the connecting wires and mounted inside the hollow reinforcement. 0