JPH03262603A - Control method of extrusion die - Google Patents

Abstract

PURPOSE:To enable precise correction of a worn part by achieving simply and precisely a worn situation of an inner flow path, by a method wherein a form gauge having a gage surface corresponding to the inner flow path of an extrusion die is formed, a filler is filled into the inner flow path in which the form gauge is pressed and the filler remaining on an inner flow path side is measured. CONSTITUTION:An extrusion die 1 is divided into two, into the first flow path 11a of an inner flow path 11 of which a filler 3 such as clay is charged and then a gage main body 22 of a form gage 2 is pressed into the first path 11a from the upper part side of the extrusion die 1. A gage surface 23 of the gage main body 22 comes into contact with the first flow path 11a, and the filler 3 is removed to a relief groove 25 side at the gage surface 23, in a nonworn part of a the first flow path 11a. On the one hand, a gap is generated between the nonworn part and gage surface 23 and a part of the filler 3 remains on a worn part side, in the worn part of the first flow path 11a. Therefore, a worn situation of the first flow path 11a can be achieved precisely by measuring a thickness of the remaining filler 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method of managing an extrusion mold used for extrusion molding of mortar, fine ceramics, etc., which are materials for housing construction materials.

2. Description of the Related Art In general, the internal flow path of an extrusion mold is gradually worn out with use because an extrusion material such as mortar passes through it under pressure. By the way, the internal flow path of an extrusion mold is very important, and if the shape becomes inappropriate due to wear, the thickness of the extruded product may become uneven, or the extrusion direction of the product may change. Extrusion molds need to be carefully controlled, as cracks can cause cracks and cavities inside the product.

Conventionally, therefore, the internal flow path of the extrusion mold was measured with a caliper or a steel gauge to investigate the worn parts, and then the worn parts were built up and corrected.

Problems to be Solved by the Invention However, as described above, when measuring the internal flow path of an extrusion mold with a caliper or a steel ruler, there are variations in the measured values depending on the measurer and the measuring method, and the internal flow path is Due to this, it was not possible to accurately correct the wear points, leading to the production of defective products.

The present invention solves the above-mentioned problems, and makes it possible to easily and accurately grasp the wear status of the internal flow path in an extrusion mold, to accurately correct the worn parts, and to reduce the occurrence of defective products. The purpose is to provide a method for managing extrusion molds.

Means for Solving the Problems In order to solve the above problems, an extrusion mold management method according to the present invention forms a figure gauge with a gauge surface corresponding to the internal flow path of the extrusion mold, and A filler is loaded onto the inner surface of the tube, a gauge is pushed in, and the amount of filler remaining on the internal flow path side is measured to investigate the state of wear.

By loading the filler into the internal channel of the extrusion mold and pushing the shape gauge, the non-wearing parts of the internal channel can be
The filler is removed from the gauge surface of the shape gauge, and on the other hand, at the worn location, a gap is created between the worn location and the gauge surface, so some of the filler remains on the worn location side. Therefore, by measuring the remaining filler, the wear status of the internal flow path can be accurately grasped, and the internal flow path can be accurately corrected based on the measured value of the remaining filler.

EXAMPLE An example of the present invention will be described below based on the drawings. Third
In the figure, an extrusion die 1 is attached to the front side of an extrusion molding machine 50 in the extrusion direction, and a flow rate regulator 60 and a die 70 are attached to the front side of the extrusion die 1. In the figure, 80 is a roll with a pattern rotatably provided on the outside of the base 70, and 90 is a take-up conveyor.

The extrusion die 1 is formed with an internal flow path 11 through which the extrusion material passes, and the internal flow path 11 includes a first flow path 11a having a generally arcuate cross section, and a flow path from the first flow path 11a. A second flow path flb with a small diameter that continuously extends toward the mouthpiece 70 side.
The extrusion die 1 is divided into two parts, an upper and a lower part.

Next, the operation of the above configuration will be explained. Extrusion molding machine 5
The extruded material from 0 passes through the internal flow path 11 of the extrusion mold 1, that is, the first flow path 11a and the second flow path 11b, and then passes through the adjustment body 6.
0 and extruded outward from the nozzle 70, the patterned material is patterned by a roll 80, and then taken up by a take-up conveyor 90 and made into a product. By the way, during the extrusion molding as described above, the extruded material is passed under pressure through each of the channels 11a and flb of the extrusion mold 1, and each of these channels 11a.

Since the extrusion die 11b is worn out, it is necessary to manage the extrusion die 1 by understanding and correcting the wear situation.

In managing the above extrusion mold 1, the first
This is carried out as shown in Figures 1 and 2, and these figures show the case where the wear condition on the first flow path 11a side of the internal flow path 11 of the extrusion die 1 is investigated.

That is, the first flow path 11 of the internal flow path 11 in the extrusion die 1
A figure gauge 2 for measuring the a side is formed, and this figure gauge 2 corresponds to the mounting base 21 and the first flow path 11a of the internal flow path 11 when the extrusion mold 1 is divided into two parts. A plurality of narrow gauge bodies 24 are provided on the side of the gauge body 22, each having a gauge surface 23 that follows the inner shape of the first channel 13a which is divided into two. , relief grooves 25 are formed between each of these gauge bodies 24.

As shown in FIG. 1, first, the extrusion mold 1 is
The filler 3 such as clay is loaded into the first channel 11a of the internal channel 11, and then, as shown in FIG. The gauge body 22 of the figure gauge 2 is pushed toward the path 11a. Then,
At the non-wearing portion of the first flow path 11a, the gauge surface 23 of the gauge body 22 is brought into contact with the first flow path 11a, and the filler 3 is expelled from the gauge surface 23 to the side of the drainage groove 25. On the other hand, at the worn portion of the first flow path 11a, a gap is generated between the worn portion and the gauge surface 23, and a portion of the filler 3 remains on the worn portion side. Therefore, by measuring the thickness of the remaining filler 3, the wear condition of the first flow path 11a can be accurately grasped, and the gauge surface 23 of the gauge body 22 can be placed along the entire surface of the first flow path 11a. Since the state of wear is measured, accurate measurements can be made without deviating the measured dimensions, and the wear location of the first flow path 11a can be accurately corrected based on the measured value of the remaining filler 3. Ru.

Furthermore, when measuring the thickness of the filler 3 remaining on the first channel 11a side of the extrusion die 1, for example, the second channel f
The thickness of the remaining filler 3 is measured at multiple locations with reference to the end on the die 60 side, which is divided into lbs. In this way, after the extrusion die 1 has been used for a certain period of time, the wear state can be measured again. Similar measurements can be reproduced when

Furthermore, as described above, after measuring the wear condition of one side of the extrusion die 1 divided into two with the figure gauge 2, the wear condition of the other side of the extrusion die 1 is measured with the same figure gauge 2. be.

The extrusion mold 1 shown in the embodiment of each figure has a cylindrical outer frame 12,
The inner mold 18 is disposed within the outer frame 12, and the internal flow path 11 described above is formed in the inner mold 13. The outer frame 12 and the inner mold 13 are placed at the center position in the vertical direction. It is divided into two parts, top and bottom. The inner mold 13 is made of a resin such as urethane so that when there is a worn part in the internal flow path 11, the worn part can be easily corrected.

As described in detail, according to the extrusion mold management method of the present invention, a shape gauge having a gauge surface corresponding to the internal channel of the extrusion mold is formed, and a filler is added to the internal channel. By loading the filler and pushing in the shape gauge, measuring the filler remaining on the internal flow path side and investigating the wear condition, it is possible to easily and accurately grasp the wear status of the internal flow path, and accurately correct the worn location. This makes it possible to reduce the number of defective products.

[Brief explanation of drawings]

FIGS. 1 and 2 are cross-sectional views showing the progress of management according to an extrusion mold management method according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view schematically showing how the extrusion mold is used. . DESCRIPTION OF SYMBOLS 1... Extrusion mold, 11... Internal channel, 2... Appearance gauge, 23... Gauge surface, 3... Filler.

Claims (1)

[Claims] 1. Form a shape gauge with a gauge surface that corresponds to the internal channel of the extrusion mold, load filler into the internal channel, push the shape gauge, and measure the filler remaining on the internal channel side. A method for managing an extrusion die, characterized by investigating the state of wear.