JPS61146502A - Manufacture of ceramic product - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] "Purpose of F!AO" (Technical Field of the Invention) The present invention is a ceramic! This relates to a method for manufacturing J1 products.

(Conventional technology and its R1j 1 point) # of conventional ceramic products! In legacy manufacturing methods, the challenge is how to manufacture products with complex shapes. For example, the slurry is used for forming plates, that is, the upper mold, the lower mold, and the or.
It is press-fitted into the base space and cast to form a green base, and after releasing the resulting green base, it is fired and the seven-piece mold is made! ll! In the method of obtaining the product, since the raw material is extremely brittle, if the raw material has rough-shaped parts, the complicated-shaped parts will be chipped when the mold is released from the upper and lower molds, resulting in cracks and cracks. In many cases, the yield was poor.

(Technical Problem to be Solved by the Invention) The technical problem to be solved by the present invention is to arrange a stationary mold on one of the upper mold and the lower mold, and to make the device y11 take charge of the complicated shaped part ohm. By maintaining the softness and elasticity of the material, it is possible to release the green material from the mold without damaging parts with complex shapes.

"Structure of the invention" (Technical means for solving the technical problem) Technical means taken by the present invention to solve the above Rm. An okiya in charge of O-molding of the complex-shaped part is arranged, and the upper and lower molds are clamped together, and after tightening W1, the plaster is press-fitted into the molding space formed in the upper and lower molds and the okiya O5H. Then, the upper and lower molds are opened and elastically deformed to create a space between the mold and the green material and then separated from the green material. The mold was released and the released green body was fired to obtain a 72mm product.

(Effect of technical means) The okiya maintains flexibility and elasticity and is in charge of molding complex shaped parts during casting molding, and the raw material O after casting molding.
At the time of release, the mold is detached from the green material while being elastically deformed, and the green material is released from the mold without being subjected to unreasonable force in its complex-shaped portion.

``Effects of the Invention'' According to the configuration of the present invention as described above, mold release in complex-shaped portions of the green material is performed without applying excessive force due to the elastic deformation of the mold, so that the complex-shaped portions are not affected. The green material can be released from the mold without causing cracks or cracks.
It is possible to manufacture ceramic products with complex shapes at a high yield.

"Example" An embodiment of the present invention will be described below with reference to the drawings.

The manufacturing method of this embodiment is to manufacture a burner plate (4) of a gas burner installed in a domestic gas conditioner field as a ceramic product.

As shown in Figures 7 and 8, there is a boss part (on the burner plate) that fits and is supported by the tip of the burner (0) in the center.
A large number of teeth (holes) are formed on the lower part m of the outer periphery connected to the boss part (mu D), and a plurality of flame holes (mu ρ) are opened on the upper surface of the boss part (mu 0). are formed on the outer periphery of the burner plate at equal intervals, e.g. It is like a fire rising up in the air.

The manufacturing process for the burner plate (as described above) is as follows.

First, top! ! (1), the lower m1 (2) and the stationary mold (3) are used to mold the raw material (→) by casting.

The upper mold (1) and the lower mold (2) are not plaster molds, and are in charge of molding the external shape of the burner plate (D) and the boss portion (D) and the flame hole (D), respectively. The molded part (C) (2) of the lower part 11 (2) has a press-fit passage (4) communicating with the bottom of the molded part (2).

It is in charge of molding the complex-shaped part, that is, the tooth (mu0) in the burner plate (3) of the Company (3).As shown in FIGS. 5N5 equally in the circumferential direction corresponding to the external shape and gap of (mu 8)
1 and a tooth profile (to) are provided, and 1 above i1 (
1) and the lower mold (2), for example, the lower W(z) molding part (
b).

Casting molding oR*, b using the above upper mold (1), lower W (2), and stationary mold (3) is performed by first placing the stationary mold (3) in the molding part 01 of the lower mold (2), and then And as shown in Figure 2, the upper mold (
1) and lower fli (2) together and clamp the mold.

After the mold clamping is completed, as shown in Fig. 8, the upper mold (1), the lower mold (2) and the stationary mold (3
) is press-fitted into the molding space (8) formed between ), and the green material (→) is molded.

After the above casting process is completed, as shown in Fig. 4, open the shed (1) and the lower mold (2) and place the raw material (-) between the shed (1), the lower mold (2) and the mold. (3) Release from the mold. Okiya (3)
The raw material from (→0 separation is upper 11 (1) and lower 11 (
After opening the mold in 2), take out the raw material (→) to the okiya (3) and -Jl, stretch the erected mold (3) by hand to make it elastically deform, and create a space between the okiya (3) and the green material 0. Create Ii[ to make Okiya (3) leave from raw material 0.

Incidentally, it is also possible to mechanically release the fresh leaves jth (→ from the previous device Wi (3). For example,
) on the lower Ml (2) with a thread, and then the upper plate (1) and the lower 1! When the mold (2) is opened, the mold (3) is pulled with the thread to elastically deform it, and compressed air is blown into the gap created between the mold (3) and the green material (&). ) to remove the stationary mold (3).

After the green material (a) is molded and released as described above, the main rope jIh(-) is placed in a furnace and fired to obtain a burner plate (4) as a product.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view showing a state in which the upper mold and lower mold are tightened in a double-tight manner in an embodiment of the manufacturing method of the present invention, Fig. 2 is a partially cutaway plan view of the same, and Fig. 8 shows the state during casting. A longitudinal cross-sectional view showing,
Fig. 4 is a cross-sectional view showing the upper and lower molds opened and the green material released from the mold; Fig. 5 is a partially cutaway front view of the mold; FIG. 7 is a partially cutaway front view showing a burner plate as an example of a ceramic product, and FIG. 8 is a bottom view of the same. (In the figure) - Burner plate (ceramic product) (-) - Raw material) - Mud paste (S) -・
Molding space (1) - Upper mold (2) - Lower mold
(3) - Place the molding part on the mold α car (2
) - Molding part of the lower mold Figure 2 Figure 1 To the flash Figure 5 Figure 6 Figure 7 Figure 1? figure

Claims (1)

[Claims] A stationary mold made of an elastic material and responsible for molding parts with complex shapes is placed in the molding part of one of the upper and lower molds, and the upper and lower molds are clamped together, and after clamping, the upper mold is removed. Mud is press-fitted into the molding space formed between the lower mold and the standing mold to cast and mold the green substrate, and then the upper mold and the lower mold are opened and the standing mold is elastically deformed to form the green substrate. A method for producing a ceramic product, in which the green body is released from the green body by creating a gap between the two, and the released green body is fired to obtain a ceramic product.