JPS6254571B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for processing a full mold model material for casting, which allows processing to be performed quickly and easily.

(Prior Art) In order to manufacture a casting mold, first a model is manufactured from a foamed material such as polystyrene, and the mold is determined.
To produce a full mold model (hereinafter referred to as a poly model) for this purpose, a fixed length of foam material (hereinafter referred to as material) is cut into the required dimensions and shape.
It will be assembled with adhesive. Figures 11 to 13 show the conventional poly model processing method. First, Figure 11 shows the table 2 of the saw machine 1.
In the method shown in FIG. 12, a beveling stand 4 is placed on the top of the table 2 and the material 3 is processed. In the example shown in FIG. 13, a nichrome wire 8 is tensioned by a spring 7 on a support 6 of a hot wire processing machine main body 5, and a material 3 placed on a moving carriage 9 is processed.

(Problems to be Solved by the Invention) Other conventional techniques include those in which a laser beam is used in place of the sawtooth or nichrome wire shown in FIGS. 11 to 13 above. However, in any of these cases, the processing of the material 3 is limited to simple processing, and therefore, in order to produce a polygon model with a complex shape, the same operation must be repeated several times by changing the orientation and posture of the material 3. It became necessary to repeat it. This requires a large amount of time and man-hours, and there is also the problem that the products vary depending on the skill level of the workers. The present invention solves this problem.

(Means for Solving the Problems) The present invention, as a means for solving the above problems, has a structure in which heating wires such as nichrome wires, iron chrome wires, or laser beams are spaced at appropriate intervals when viewed from the front. The material is cut into the shape of the hot wire by extruding the material from the front or back direction of the hot wire.

(Function) By using this method, if the shape of the hot wire is made as close to the final shape of the product as possible,
This means that processing can be done in a much shorter time than in the past, and without being affected by individual differences among workers.

(Example) Although the present invention consists of the above-described method,
Next, an embodiment will be described with reference to the drawings. In FIG. 1, 10 is the main body of the processing machine, which is provided diagonally by legs 11 and 12 of different heights. The main body 10 has a long hole 1 along its longitudinal direction.
3 is provided, and the material 3 is placed inside this elongated hole 13.
The extruder 14 for extruding this material 3 is located, and the insulating frame 1 is provided at the end of the lower height side.
Material 3 is extruded to the 5 side.

As shown in FIG. 2, the extruder 14 has grooves 16 to avoid nichrome wires, which will be described later.
A cart 19 is movably provided within the box-shaped main body 10 with rollers 17 and side rollers 18.
It is supported so that it can be moved. A weight 20 is attached to the truck 19, and serves as a motive force for movement within the main body 10, which is provided in an inclined state. A material guide plate 21 is provided on the upper surface of the main body 10 to correctly guide the material 3 to the insulating frame 15 side. 22 in FIG. 1 is a completed product passed through the insulating frame 15, and FIG. 3 shows an intermediate state. Moreover, FIG. 9 shows a finished product 22 of a different shape obtained by the same method.

5 and 6 show details of the insulating frame 15. FIG. Two arms 22 are provided on the insulating frame 15, and between these two arms 22,
Nichrome wire 23 is attached with bolts 24. Note that the insulating frame 15 is formed by overlapping a plurality of plate-shaped frames and fastening them with bolts 26.
This is not necessarily the case, and it may be formed as a single piece. As shown in FIG. 6, a recess 27 is formed at the base of the arm 22, giving elasticity to the arm 22.
Tension is applied to the nichrome wire 23. The number of nichrome wires 23 is not limited to one as shown in FIGS. 5 and 6, but a plurality of nichrome wires may be stretched as shown in FIG. 7, for example. Depending on how the nichrome wire 23 is stretched, finished products 22 of various shapes as shown in FIGS. 8 to 10 can be obtained.

Although the embodiment described above uses a nichrome wire as the heating wire, this may be replaced with an iron chrome wire, or even a laser beam may be used. When using a laser beam, the laser beam is run in the direction in which the nichrome wire is stretched. In the embodiment shown in Fig. 1, the main body is tilted and a weight is attached to the trolley as a means for moving the material.
Instead of this method of movement, an air cylinder or a motor may be used.

(Effects of the Invention) Since the present invention is a method for processing full-mold model materials for casting as described above, it is possible to process materials with complex geometrical cross-sectional shapes of materials that can be heat-processed, such as polystyrene foam, mainly poly mold materials. However, it will be possible to continuously produce high-quality parts at low cost.
It also makes the work easier and does not require skill.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an apparatus for implementing the present invention, FIG. 2 is a sectional view taken along the line - in FIG. 1,
Figure 3 is a perspective view of partially processed material, Figure 4 is a perspective view of another example of the finished product, Figure 5 is a perspective view showing details of the insulating frame, and Figure 6 is the front view of Figure 5. Figure 7 is a front view of another example of how to stretch the nichrome wire, Figures 8 to 10 are front views showing examples of the finished product, Figure 1
Figure 1 is a side view showing a conventional processing device;
The figure is a front view of a partially modified example of the one in Figure 11,
FIG. 3 is a front view of another example of a conventional processing device. 3...Material, 10...Main body, 15...Insulating material,
22...Finished product, 23...Nichrome wire.

Claims (1)

[Claims] 1. Heat wires made of nichrome wire, iron-chrome wire, laser beam, etc. are set in a cross shape with appropriate spacing when viewed from the front, and the material is pushed out from the front or back direction. A method for processing full mold model material for casting, which is characterized by cutting into shapes.