JPH05237826A - Device for molding tile provided with dovetail - Google Patents

Abstract

PURPOSE:To mold a tile provided with a dovetail by a dry method, by a method wherein a guide groove penetrating slantwise through the top and bottom surfaces is formed in a bottom force which performs pressure molding along with a top force, the dovetail is fitted with a template whose upper part is made into a dovetail farming part, the bottom force is provided on a pedestal support and they are made separatable from each other. CONSTITUTION:A support 3 and bottom force 4 on the same are arranged within a stationary frame 1 and they are made elevatable respectively. An air gap is formed by interposing a spring 7 between the support 3 and bottom force 4. A guide groove 9 penetrating slantwise through the top and bottom surfaces is provided in the bottom force 4. A template 10 which is slidable within the guide groove is constituted so that a lower part is supported turnably on the support, 3 by a connecting pin 11, its upper part is provided with a dovetail forming part 10b and the top surface is projected through a molding surface when the bottom force 4 comes into contact with the support 3. Furthermore, the guide groove 9 is constituted so that the same other than the top end 9a is made wide and the template 10 can be turned slightly around a connecting pin 11. After the press molding by a top force 12, at the time of mold release, the template 10 is lowered to the bottom force while turning slightly and separated from a dovetail forming part 13a of a tile.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dovetail tile forming apparatus.

[0002]

2. Description of the Related Art Conventionally, a method of molding a tile having a dovetail groove formed on the back surface thereof in order to enhance the adhesion strength with a tile-applied surface is a wet process in which a clay-like raw material is extruded from a die hole having a dovetail groove. The method has been adopted. This is because it is difficult to remove from the molded dovetail groove by the dry method in which the tile molding raw material is compressed by the lower mold and the upper mold to mold the tile.

[0003]

According to the above-mentioned wet method, it is difficult to form spotted substances such as natural stone, it is inconvenient to handle the clay-like raw material, and a drying step is required.
In addition, various problems peculiar to the wet process occur such as distortion of the product.

[0004] Therefore, an object of the present invention is to propose an apparatus which can easily form a dovetail-groove tile by a dry method.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an abutment (3) in a fixed frame (1) and a lower die (4) located above the abutment (3). ) Can be moved up and down, and the abutment (3) and the lower die (4) can be vertically separated from each other, and the lower die (4) has a guide groove (inclined with respect to the vertical direction). 9) is formed so as to penetrate through the upper and lower surfaces of the lower die (4), and the template (10) is slidably provided in the guide groove (9), and an ant is provided on the upper portion of the template (10). A forming portion (10b) is formed, and a lower portion is rotatably supported by the connecting pin (11) on the abutment (3). Further, the guide groove (9) is connected to the template (10) by the connecting pin (11). ) Is formed so as to be able to rotate slightly, and an upper mold (12) is provided on the upper part of the lower mold (4) so as to be able to move up and down.

[0006]

[Function] Tile molding starts from the state shown in FIG.
Then, the lower mold (4) is lowered, and the tile raw material is put into the space formed between the lower mold (4) and the fixed frame (1). Then, the upper mold (12) is lowered to press the tile raw material (13). At this time, a dovetail groove is pressure-molded on the lower surface of the tile by the dovetail forming portion (10b) of the template (10). And the upper mold (1
2), the lower mold (4) and the abutment (3) are lifted to remove the mold.

At the time of releasing the mold, the mold plate (10) slides in the guide groove (9) and descends with respect to the lower mold (4), and moreover, it rotates slightly around the connecting pin (11) therebelow. The dovetail forming portion (10b) moves and moves down while moving in a direction away from the dovetail groove forming portion (13a) of the pressure-molded tile.

Therefore, the pressure-formed ant forming portion (10
b) is demolded without interfering with the template (10).

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 1 is a fixed frame in which a support 3 is vertically movable in a mold cavity 2 and a lower mold 4 is vertically movable above the support 3.

The abutment 3 is constantly urged upward by a spring 6 interposed between the fixed bases 5 to be supported. The lower die 4 is constantly urged upward by a spring 7 interposed between the abutments 3, and has a gap D between the lower die 4 and the abutment 3 when not molded, as shown in FIG. .. Further, a rod 8 is connected to the center of the lower surface of the lower die 4, the rod 8 passes through a hole 3a formed in the center of the abutment 3, and the lower end thereof is connected to a hydraulic device (not shown). 4 can be moved up and down.

On the upper surface of the lower mold 4, a shallow mold cavity 4a is formed on almost the entire surface except for the peripheral edge 4b. In the drawing of the lower die 4, front and rear guide grooves 9, 9 are formed in the left and right parts,
The both guide grooves 9, 9 are formed in a V shape that inclines toward the center in the downward direction.

Reference numerals 10 and 10 denote template plates slidably provided in the guide grooves 9 and 9. The lower ends of the template plates 10 and 10 are rotatably connected to each other by a connecting pin 11, and The connecting pin 11 is fixed to the abutment 3. Also, the template 1
The upper surfaces 10a, 10a of the Nos. 0, 10 are formed in the horizontal plane, and the dovetail forming portion 10b having an acute angle is formed on the outer side thereof.

The vertical lengths of the mold plates 10 and 10 are as follows.
In the unmolded state of FIG. 1 having the gap D, the upper surface 10a is recessed in the guide groove 9, and in the molded state of FIG. 2 in which the lower mold 4 is in contact with the abutment 3, the upper surface 10a projects into the mold cavity 4a. Is set.

The upper and lower portions of the guide grooves 9 and 9 have a short vertical distance substantially equal to the thickness width of the template 10, and the other portions 9b are considerably larger than the thickness width of the template 10, Both mold plates 10 and 10 are formed so as to be able to swing slightly to the left and right with the connecting pin 11 as a fulcrum.

Numeral 12 is an upper die, which can be moved up and down by a hydraulic device (not shown). Next, the operation of this embodiment will be described. First, the lower mold 4 is lowered from the state of FIG. 2, and its upper surface is stopped at a position lower than the upper end of the fixed frame 1 by a predetermined distance, and is formed by the upper surface of the lower mold 4 and the inner peripheral surface of the fixed frame 1. Then, the tile raw material is put into the space portion having a predetermined volume.

After charging the raw materials, the lower mold 3 and the upper mold 12 are lowered. Due to this lowering, the lower die 4 first hits the abutment 3 against the spring 7, and the lower die 4 descends together with the abutment 3 and stops at a predetermined position. On the other hand, upper mold 1
2 is also lowered until the charged tile raw material 13 is pressurized to a predetermined pressure.

By lowering the lower mold 4, the mold plates 10, 10 are
2, the upper surfaces 10a, 10a of the tiles project into the mold cavity 4a as shown in FIG. 2, and a part of the tile raw material 13 is pressed to the outside of the dovetail forming portion 10b of the projecting mold plates 10, 10. It wraps around like 13a shown by 1, and this part 1
3a is pressure-molded integrally with the tile body 13b.

After this pressure molding, the upper mold 12 is lifted and the lower mold 4 is lifted to a position above the fixed frame 1 as shown in FIG. At the time of demolding, the abutment 3 is separated downward from the lower mold 4 by the spring 7, and the mold plate 10
Is pulled downward with respect to the lower mold 4. At this time, the upper portion 9a of the guide groove 9 has a short distance and the template 10
Since there is a slight gap between them, the mold plate 10 can slightly rotate around the connecting pin 11 toward the center of the lower mold 4,
From the state shown in FIG. 1, the template 10 descends with respect to the lower mold 4 while slightly rotating so that the dovetail forming portion 10b moves away from the portion 13a forming the dovetail groove of the pressure-molded tile. As shown in FIG. 2, the lower mold 4 is embedded through the mold cavity 4a.

As a result, the portion 1 forming the dovetail groove of the tile
3a is demolded without interfering with the template 10, and a tile 15 having a dovetail groove 14 formed on the back surface is molded as shown in FIGS. 4 and 5.

[0020]

As described above, according to the present invention, a tile with a dovetail groove can be easily formed by a dry method.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of the present invention, showing a state at the time of pressure molding.

FIG. 2 is a side sectional view showing the demolded state.

3 is a sectional view taken along the line AA in FIG.

FIG. 4 is a side cross-sectional view of a molded tile.

FIG. 5 is a rear view of the same.

[Explanation of symbols]

 1 Fixed frame 3 Abutment 4 Lower mold 9 Guide groove 10 Mold plate 11 Connecting pin 12 Upper mold

Claims (1)

[Claims] 1. An abutment (3) in a fixed frame (1) and a lower die (4) located above the abutment (3) are provided so as to be able to move up and down, respectively. A lower die (4) is provided so as to be vertically separable from each other, and a guide groove (9) inclined to the vertical direction is formed in the lower die (4) by penetrating the upper and lower surfaces of the lower die (4). The guide plate (10) is slidably provided in the guide groove (9), a dovetail forming portion (10b) is formed on the upper part of the guide plate (10), and the lower part is the abutment (3). ) Is rotatably supported by a connecting pin (11), and the guide groove (9) is formed so that the template (10) can be slightly rotated about the connecting pin (11). An upper mold (12) is provided on the upper part of the mold (4) so as to be able to move up and down.