JP3054093B2 - Mold for clay tile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding tile for a clay tile comprising an upper die and a lower die which is assembled to a molding press for clay tiles and the like.
The present invention relates to a molding die in which an upper die and a lower die are clamped with their side circumferences fitted to each other.

[0002]

2. Description of the Related Art Conventionally, a mold of this type has a structure shown in FIG.
As shown in FIG. 1, a side frame body 22 is simply formed so as to fit on the side peripheral surface of the mold so that the upper mold 21 and the lower mold 20 can be clamped with their side circumferences fitted to each other. Was.

[0003]

However, in the case of this type of mold in which the upper mold 21 and the lower mold 20 are clamped with their side circumferences fitted to each other, when molding clay tiles,
When the upper mold 21 is lifted and released from the lower mold 20, a phenomenon occurs in which a space including a mold surface formed by the upper mold 21 and the lower mold 20 is temporarily in a vacuum state. . When the side peripheral fitting portion of the upper die 21 or the lower die 20, for example, the side peripheral surface of the die or the side frame 22 attached to the side peripheral surface wears each other, the upper die 21 Alternatively, a gap is formed in the side circumference fitting portion of the lower mold 20. With the mold clamping in the formation of the clay tile, the clay which is the molding base of the tile enters the gap and the tile is formed together with the molding. It is formed as scum K (or also referred to as shaping). In this case, as shown in FIG.
Is lifted and released from the lower mold 21, and the molding waste K is attached to the inner surface of the lower end of the side frame 22 of the upper mold 21 and is sucked into the space including the mold surface. However, it falls and adheres to the surface of the molded product after press molding that has not been released from the lower mold 20, and various problems in the subsequent tile molding, for example, after the glaze is applied and fired, When peeled, the background of the tile is exposed, which causes a serious problem of generating a defective tile. Furthermore, in order to minimize the occurrence of the above-mentioned shavings, more attention should be paid to the abrasion state of the side peripheral surface of the mold or the side frame attached to the side peripheral surface than necessary,
The frequency of replacing the mold or the side frame body (correcting the mold) is greatly increased, which also causes a problem that the durability of the mold itself is lacking. Accordingly, the present invention has been made in view of the above-described problems, and accompanying the time of mold clamping in the molding of clay roof tiles, it is possible to easily remove molding waste to be formed, and to significantly reduce the occurrence of defective tiles, An object of the present invention is to provide a mold for clay tiles, which can significantly improve the durability of the mold itself.

[0004]

Means for Solving the Problems In order to achieve the above object, the invention of claim 1 of the present invention comprises an upper mold and a lower mold which are assembled to a molding press for clay roof tiles and the like. A molding die in which an upper die and a lower die are clamped to each other with their side circumferences fitted to each other, and a molding waste is formed along a side circumference with respect to a side peripheral surface fitting portion of the upper die or the lower die. The storage groove to store
Slightly shifted from the mold surface formed on the upper mold or the lower mold.
It is characterized by being formed independently at the position defined . According to this configuration, when the upper mold is lifted relative to the lower mold from the end of the mold clamping by the upper mold and the lower mold, the gap is generated within the gap generated due to wear in the side peripheral fitting portion of the upper mold and the lower mold. The formed scum is transferred to the upper or lower mold
It can be stored in a storage groove formed independently at a position slightly shifted from the surface .

According to a second aspect of the present invention, there is provided a mold for clay tile according to the first aspect, wherein one side of the molding groove is opened and the other side is formed in the storage groove. And blowable air supply means for supplying blown air to the blower to discharge molding waste and the like. According to this configuration, when the upper mold is lifted relative to the lower mold from the end of the mold clamping by the upper mold and the lower mold, the gap is generated within the gap generated due to wear in the side peripheral fitting portion of the upper mold and the lower mold. The formed scum is stored in the storage groove, and the scum or the like stored in the storage groove is positively externally (outside the mold) from the storage groove by the blowing air from the blowing air supply means. It can be blown off and discharged.

Further, the invention of claim 3 of the present invention is the molding die for clay tile according to claim 1, wherein one side of the molding groove is closed and the other side is formed in the accommodation groove. Characterized in that it is configured to be able to communicate with a suction means for sucking a molding waste or the like. According to this configuration, when the upper mold is lifted relative to the lower mold from the end of the mold clamping by the upper mold and the lower mold, the gap is generated within the gap generated due to wear in the side peripheral fitting portion of the upper mold and the lower mold. The formed scum is stored in the storage groove, and the formed scum stored in the storage groove is positively sucked from the storage groove to the outside (outside the mold) by suction means for sucking the formed scum and the like. It can be discharged.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. First, the first embodiment shown in FIGS. 1 to 7 will be described in detail. In the drawings, reference numeral 1 denotes the entirety of an existing tile forming press (machine), On the upper part, a lower mold 4A constituting the molding die S is mounted so as to be exchangeable, and above the base 2, an elevating frame 6 with respect to the guide column 5 by elevating means 7 comprising a fluid pressure cylinder or the like. The upper die 4B constituting the forming die S is mounted so as to be replaceable in correspondence with the lower die 4A below the die mount 8 of the elevating frame 6.

The lower mold 4A and the upper mold 4B constituting the molding die S are formed in a rectangular shape as a whole, and the lower mold 4A has a predetermined tile shape to be molded on its upper surface (in FIG. A mold surface Wa is formed, and long flat plate-like side frame bodies 9 and 9 are provided on the opposite side surface (the front-rear direction side in FIG. 1) with bolts or the like. Are exchangeably mounted by the fastening means. The upper mold 4B has a mold surface Wb having a predetermined roof tile shape (a flat roof tile is shown in the figure) to be formed on the lower surface thereof, and the other side (the left-right direction side in FIG. 1) opposed to the mold surface Wb. On the side surface, flat long side frames 10, 10 are attached in a hanging state so as to be exchangeable by fastening means such as bolts.

In the lower mold 4A and the upper mold 4B, the inner surfaces of the side frames 9, 9 of the lower mold 4A are fixed to the side periphery of the upper mold 4B during the period from the pressing state accompanying the tile forming operation to the mold clamping state. And the side frames 10 and 1 of the upper die 4B.
The inner surface of the lower die 4A is fitted in contact with the side peripheral surface of the lower die 4A, and the die surface Wa of the upper surface of the lower die 4A, the die surface 4b of the upper die 4B, and the respective side frame members 9, 9, 10, 10 and A space (a space that matches the shape of the tile to be formed) is formed.

Each of the side frames 9, 9, 10, 10 has a position slightly shifted from the mold surface Wa, Wb with respect to the side peripheral surface fitting portion with the lower mold 4A or the upper mold 4B, that is, the lower part. Type 4
In the case of the side frames 9 and 9A, a position slightly above the mold surface Wa of the lower mold 4A (the mold surface Wb of the upper mold 4B in the clamped state).
A slightly higher position), and in the case of the side frames 10, 10 of the upper die 4B, a position slightly lower than the die surface Wb of the upper die 4B (the die surface Wa of the lower die 4A in the closed state). The storage grooves 11 to 14 each having a substantially C-shaped cross section are formed in the lateral direction along the side peripheral surface. The storage grooves 11 to 14 are, as described above,
The inner surfaces of the side frames 9, 9 of A are fitted in contact with the side peripheral surfaces of the upper die 4B, and the inner surfaces of the side frames 10, 10 of the upper die 4B contact the side peripheral surfaces of the lower die 4A. In the mated state,
The front opening side is closed by the side peripheral surface of the lower mold 4A or the upper mold 4B to form a void having a square cross section.

Each of the storage grooves 11 to 14 of each of the side frames 9, 9, 10, 10 is open at one end side and closed at the other end side. Are provided with communication holes 16 to 16 to which nozzles 15 to 15 for attaching hoses are attached at the distal end. The hoses 18 to 18 connected to a compressed air supply source 17 such as a compressor are connected to the hose mounting nozzles 15 to 15.

Next, the operation of the above-described first embodiment will be described. First, in the first embodiment, a tile-forming body made of clay is placed on the mold surface Wa of the lower mold 4A in the tile-forming press device (machine) 1 and is raised by the elevating means 7. The mold 4B is lowered together with the elevating frame 6, the mold is clamped while pressing the molding base W to press-mold a tile having a predetermined shape, and the upper mold 4B is raised together with the elevating frame 6 to lower the lower mold 4A. This is to release the press-formed roof tile W from the mold surface Wa by releasing the mold.

At the time of the above-mentioned press molding, a molding die S
In this case, during the period from the pressurizing step to the mold clamping step, the inner surfaces of the side frames 9, 9 of the lower die 4A are fitted in contact with the side peripheral surfaces of the upper die 4B, and the upper die 4B Side frame 10,1
The inner surface of the lower mold 4 is fitted in contact with the side peripheral surface of the lower mold 4A, and if wear occurs at each side peripheral fitting portion, the molding base is formed in a gap generated by the wear. Is formed into a molding waste, and the molding waste is formed by the upper mold 4B.
When the mold is lifted by the vacuum phenomenon when the mold is released from the lower mold 4A with the rise of the mold, the molding waste is generated when the upper mold 4B is lifted from the end of the clamping by the lower mold 4A and the upper mold 4B. Accordingly, each of the side frames 9, 9, 10, and
Each of the ten storage grooves 11 to 14 is housed in each of the storage grooves 11 to 14 so as to be scraped off by an edge portion thereof.

In this case, a compressed air supply source 17 such as a compressor or the like is provided in each of the storage grooves 11 to 14.
18, nozzles 15 to 15 for hose attachment, communication holes 16
Since the compressed air is supplied through steps 16 to 16, the molding waste stored in each of the storage grooves 11 to 14 is blown out of the mold from one open end side by the blowing action of the compressed air and discharged. Is what is done.

When the compressed air is not used, the molding waste is stored and stored in each of the storage grooves 11 to 14 every time the tile is press-molded. It is also possible to discharge and remove the formed scum accumulated and stored in the storage grooves 11 to 14 by sequentially extruding them.

As described above, in this embodiment, at the time of press molding, the inner surfaces of the side frames 9, 9 of the lower die 4A are fitted in contact with the side peripheral surfaces of the upper die 4B, and the upper die 4
In a state where the inner surfaces of the side frames 10, 10 of B are fitted in contact with the side peripheral surfaces of the lower mold 4A, if abrasion occurs at each side peripheral fitting portion, the abrasion is caused by the abrasion. The molding waste formed by the molding base entering into the formed gap is inserted into each of the storage grooves 11-1 of each of the side frame bodies 9, 9, 10, 10.
4 and the storage grooves 11 to 14
Since the upper mold 4B is positively discharged (removed) from the inside to the outside of the mold, the surface of the press-formed molded tile W on the mold surface Wa of the lower mold 4A when the upper mold 4B rises with the mold release from the lower mold 4A. In this way, it is possible to prevent the occurrence of defective products of tiles as much as possible by preventing the formation dust from adhering to the surface.

Next, a second embodiment shown in FIG. 8 will be described. This embodiment is different from the first embodiment in which the compressed air supply source 17 such as a compressor is used.
In this case, the suction means 19 is used in place of the storage groove 11, and each of the storage grooves 11 to 14 of each of the side frame bodies 9, 9, 10, 10 is closed at both ends thereof. 14
The nozzle 15 for attaching the hose is attached to the tip of the
Communication holes 16 to 16 are provided through which the hoses 18 to 18 connected to the suction means 19 are connected to the nozzles 15 to 15 for mounting the hoses. Since the configuration is the same as that of the first embodiment described above, the same components are denoted by the same reference numerals in the drawings, and description thereof will be omitted.

Therefore, in this embodiment,
The molding waste stored in each of the storage grooves 11 to 14 is sucked out of the mold through the communication holes 16 to 16, the hose mounting nozzles 15 to 15, the hoses 18 to 18, and the like by the suction action of the suction means 19. It is discharged and each storage groove 11
7 is removed by adopting a suction method using the suction means 19.
The molding waste formed in the portion a shown in the figure slightly below the mold surface Wa of A can be sucked and effectively removed, and the remaining operation and effects are described in the first embodiment. The operation and effect of the embodiment are enjoyed as they are.

In each of the above-described embodiments, as shown in FIG. 9, a housing groove is formed in a side peripheral surface of a molding die S (a lower die 4A is shown in the figure, but the upper die is also the same). 11
(12 to 14) to form the side frames 10, 10 (9, 9).
As in the first and second embodiments described above, a communication hole 16 communicating with the storage groove 11 (12 to 14) and having a nozzle 15 for attaching a hose attached to a distal end thereof is provided on the side thereof. A configuration may be made such that a compressed air supply source 17 such as a compressor or a hose 18 connected to the suction means 19 is connected to the hose mounting nozzle 15.

As shown in FIG. 10, the storage grooves 11 (12, 12) constructed in the same manner as in the first and second embodiments described above.
To 14) and a storage groove 11 (12 to 14) formed on the side peripheral surface of the molding die S (the lower die 4A is shown in the figure, but the upper die is also the same). Can also be adopted.

Further, as shown in FIGS. 12 (a) and 12 (b), the sectional shapes of the storage grooves 11 to 14 are not limited to the U-shape shown in the drawing, but various shapes can be adopted. However, if the shape is such that the stored molding waste does not drop from the front opening, for example, a dovetail shape or a substantially semicircular shape, the storage (accumulation) state of the molding waste can be ensured.

Further, the operation timing of the compressed air supply source 17 such as a compressor or the suction means 19 can be controlled in synchronization with the operation timing of the press device 1 such as the vertical movement of the upper die 4B.

[0023]

As described above, according to the present invention, when press forming is performed, if abrasion occurs at each side peripheral fitting portion of the lower mold and the upper mold, the abrasion is caused by the abrasion. The molding waste formed by the molding base entering the gap can be positively stored in the storage groove, and press-forming on the mold surface of the lower die when the upper die is lifted with respect to the lower die. It is possible to prevent the molding dust from adhering to the surface of the formed roof tile and to prevent the occurrence of defective products as much as possible. Further, as described above, by actively removing the molding waste, it is not necessary to pay attention to the degree of wear of the molding die and the like, and the frequency of replacement (mold correction) of the molding die and the like is greatly increased. And the durability of the mold itself can be greatly improved.

Further, in the present invention, the molding waste stored in the storage groove is positively externally (molded) from the storage groove by the blowing air from the blowing air supply means or the suction action of the suction means. Outside) can be discharged and removed,
The above effects can be further promoted.

[Brief description of the drawings]

FIG. 1 is a front view showing a tile forming press device according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a molding die.

FIG. 3 is a sectional view taken along line II of FIG. 2;

FIG. 4 is a sectional view showing a clamped state.

FIG. 5 is a sectional view taken along line II-II of FIG. 2;

FIG. 6 is a sectional view showing a clamped state.

FIG. 7 is an enlarged sectional view of a storage groove.

FIG. 8 is a plan view of a molding die showing a second embodiment of the present invention.

FIG. 9 is an enlarged sectional view showing another embodiment of the storage groove.

FIG. 10 is an enlarged sectional view showing another embodiment of the storage groove.

FIG. 11 is an explanatory view showing a state in which a molding waste is formed by a conventional molding die.

FIGS. 12A and 12B are explanatory views showing a modification of the cross-sectional shape of the storage groove.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Press apparatus 4A Lower die 4B Upper die 9 Side frame 10 Side frame 11 Storage groove 12 Storage groove 13 Storage groove 14 Storage groove 17 Compressed air supply source 19 Suction means S Mold

Claims (3)

(57) [Claims] 1. A molding die comprising an upper die and a lower die which are assembled to a clay tile forming press device or the like, and wherein the upper die and the lower die are clamped with their side circumferences fitted to each other. The upper or lower die is provided with a storage groove for storing a molding waste along the side circumference of the upper or lower die.
Separate formed <br/> the clay mold for tiles and the formed mold surface at a position shifted slightly. 2. A molding die for clay tile according to claim 1, wherein one side of said molding groove is opened and said other side is blown into said storage groove to supply molding dust. air supply means communicable with the configuration the clay mold for tile for discharging the like. 3. A mold for clay tile according to claim 1, wherein said storage groove has one side closed and said other side has suction means for sucking a molding residue or the like in said storage groove. communicable to the mold for clay tiles configured.