JP3312239B2 - Mold fixing device for tile forming machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for fixing a forming die of a tile forming machine for press-forming a wasteland for a clay tile, and more particularly to an apparatus for fixing a lower mold on a bed of a tile forming machine. is there.

[0002]

2. Description of the Related Art Since there are many types of clay roof tiles, it is known that, in the production of roof tiles, the molds are exchanged relatively frequently in response to a change in the type or wear of the molds. In this case, the fact is that the work of exchanging the molding dies is generally complicated.

Although it is known that the lower mold of the molding dies is required to be quickly fixed to an accurate position on the bed, it is difficult to replace the molding dies. Since this is an issue that greatly affects the production efficiency of tiles, some research and development has been carried out in the industry in the past.

The first is a well-known technique, in which a lower mold base 74 having a lower mold 72 fixed thereon is placed on a bed 78 of a tile forming machine. It has been widely practiced to fix one side and the other side to a bed 78 with bolts 76 (see FIG. 12).

In the first method, screw holes for bolts are provided in a lower mold base 74 and a bed 78 to which the lower mold 72 is fixed, and the lower mold 72 is fixed by simple fixing means using fixing bolts 76. Into a bed 78 via a lower mold base 74.
Although it can be fixed on the upper side, it takes time to position the lower mold 72 in a proper position to fix the lower mold 72. Even a skilled person could not eliminate the complexity of the operation, and lacked quickness.

[0006] In addition, since the molds are usually replaced while the production line is stopped, in this conventional example, the molds cannot be quickly replaced and the production line is stopped for a long time. There was a problem.

The second problem is to solve the first problem, for example, Japanese Patent Publication No. 7-554.
87 is an invention described in JP-A-87-87. According to the present invention, a lower die mounting plate 8 having a lower die 7 is mounted on a bed 4 of a tile forming machine, and a lower die clamper for controlling fixing and releasing of the lower die mounting plate 8 to and from the bed 4. The clamper 14 is provided with a hydraulic cylinder 10 and the rod 11 is provided so as to be movable up and down into the control groove 12 of the lower die mounting plate 8 (see FIGS. 2 and 3 of the same publication). See figure).

A control piece 13 is provided at the tip of the rod 11 and is controlled by an electromagnetic valve 41 for electrically controlling the lower mold clamper 14. The lower mold clamper is operated by operating the electromagnetic valve 41. When the rod 11 of -14 is slightly lowered, the control piece 13 is lowered to the bed 4 side, and the control piece 13 is tightened to the bed 4 side in the control groove 12 so that the lower die mounting plate 8 is moved to the lower die 7. At the same time, it is fixed on the bed 4.

The second method has the advantage that the lower mold clamper 14 for controlling the fixing of the lower mold mounting plate 8 can be electrically controlled, but has the drawback that the fixing means is complicated, Bed 4 for positioning lower mold mounting plate 8
Since a guide groove is required, and a control groove and a projection are required to be provided on the lower die mounting plate 8, the production and processing of the bed 4 and the lower die mounting plate 8 are complicated.

[0010]

SUMMARY OF THE INVENTION Therefore, the present invention is to solve the above-mentioned problems of the prior art.
SUMMARY OF THE INVENTION An object of the present invention is to provide a molding die fixing device for a tile forming machine capable of quickly and securely fixing a lower die on a bed by simply and reliably positioning the lower die base on the bed.

[0011]

[Means for Solving the Problems and Functions and Effects]
The molding die fixing device for a tile forming machine according to the first aspect is provided with a lower die base for supporting a lower die, provided on a bed of the tile forming machine, and a first fixing for fixing the lower die base to the bed. In a molding die fixing device for a tile forming machine in which the means is provided on one side of the lower mold base and the second fixing means is provided on the other side, the second fixing means is provided in addition to the lower mold base. And a stopper provided on the other side of the bed, which is symmetrical with respect to a center line from one side to the other side of the lower mold base,
A pair of locked surfaces formed in a substantially C shape is provided on the stopper side of the locked portion, and a pair of locking surfaces corresponding to the locked surfaces of the lower mold base are formed on the stopper. Provided on the locked part side,
The locked surface of the lower mold base is tapered from the upper surface to the lower surface, and the locking surface of the stopper is tapered from the lower surface to the upper surface. It is characterized by the following.

Since the present invention has the above-described configuration, in order to fix the lower die in a proper position, the position where the lower die is fixed on the lower die base and the lower die base are placed on the bed. In consideration of the relative arrangement relationship with the set position of the stopper for fixing the lower die, these positions are appropriately set in advance, and the lower die is fixed to the lower die base in advance.

The locked base of the lower mold base to which the lower mold is fixed faces the stopper, and the lower mold base is placed on a bed. Then, the locked portion of the lower mold base to which the lower mold is fixed by appropriate means is moved toward the stopper on the bed, and the locked portion is brought into contact with the stopper.

At this time, the locked surface of the locked portion is gradually guided by the movement of the lower mold base to the substantially C-shaped locking surface of the stopper, and the locked surface is locked with these locked surfaces. The surfaces will be fitted. Thus, the lower mold fixed on the lower mold base is:
The locked portion of the lower mold base is fitted to the stopper, whereby the lower mold base is positioned at a predetermined regular position.

The other side of the lower mold base is fixed to the bed by a tapered locked surface inclined from the upper surface to the lower surface of the lower mold base and a lower surface. Reverse the tape toward the top
The engagement of the locking surfaces of the stoppers inclined in the shape of a pallet is performed together with the positioning of the lower mold base. On the other hand, one side of the lower mold base and the bed are fixed to the lower mold base.
This is done through another fixing means such as a bolt on one side of the screw.

Therefore, the lower mold base can be positioned simply by moving the lower mold base from one side to the other side without paying special attention when moving the lower mold base. The lower mold on the lower mold base will reach a regular position.

Furthermore, by performing the positioning operation of the lower mold base, the fixing operation on the other side of the lower mold base can be performed at the same time, so that the other side of the lower mold base is fixed. Work can be omitted.

If the other side of the lower mold base is narrow, or if the distance between one side of the lower mold base and the other side is large, the worker may only be in one direction of the lower mold base. Since the fixing operation described above may be performed, the operation can be particularly simplified.

Further, since there is no need to provide projections or recesses such as guides and guide grooves for positioning on the bed, it is only necessary to fix the stopper on the bed, processing of the bed becomes extremely simple, and processing of the bed becomes extremely simple. In addition to greatly reducing the time, maintenance such as cleaning and repair of the tile forming machine can be performed extremely easily.

According to a second aspect of the present invention, a lower mold base for supporting a lower mold is provided on a bed of the tile molding machine, and the lower mold base is mounted on the bed. In a molding die fixing device for a roof tile forming machine in which first fixing means for fixing is provided on one side of a lower mold base and second fixing means is provided on the other side, the second fixing means is a lower mold. The lower part comprises a locked portion provided on the other side of the base and a stopper provided on the other side of the bed, and is symmetrical with respect to a center line from one side of the lower mold base to the other side. Wherein a pair of locked surfaces formed in a substantially C shape are provided on the stopper side of the locked portion, and the lower mold base is provided.
A pair of locking surfaces corresponding to the locked surfaces of the base are provided on the locked portion side of the stopper, and the locked surfaces of the lower mold base are tapered from the upper surface to the lower surface. The stopper is inclined, and the stopper locking surface is inclined in a reverse taper shape from the lower surface to the upper surface.

The present invention has the above-described configuration, and the difference is that the configuration of the locked surface of the locked portion and the locking surface of the stopper, which are the second fixing means, is symmetrical to that of the first aspect. However, the operation and effect obtained by the invention of claim 1 can be obtained.

According to a third aspect of the present invention, there is provided a mold fixing device for a tile forming machine according to the first or second aspect, wherein a lower mold base is pressed against one side of the bed from one side to the other side. And a pressing means for performing the pressing operation.

Therefore, the present invention has the same effect as the above-mentioned claim 1, and also moves the lower mold base from one side to the other side by appropriate means. The locked portion of the lower base is brought into contact with the stopper, and then one side of the lower mold base can be pressed toward the other side by pressing means, so that the lower mold base can be kept pressed. The engagement between the locked surface of the locked portion and the locking surface of the stopper on the other side can be ensured, and the fitted state can be maintained. Therefore, when one side of the lower mold base is fixed to the bed, the position of the lower mold base is not disturbed by the handling of the first fixing means, and the lower mold is arranged at a regular position. The lower mold base can be fixed on the bed together with the lower mold as described above.

According to a fourth aspect of the present invention, there is provided a molding die fixing device for a tile forming machine according to the first, second or third aspect, wherein the pressing means comprises an eccentric cam and a lever, and On one side, the eccentric cam is provided rotatably, and the pressing means is detachable.

Therefore, the present invention has the same effects as those of the first, second, and third aspects of the present invention, and the pressing means having the eccentric cam and the lever is provided rotatably. Thus, a booster mechanism having a simple structure can be realized. Since the slight force acting on the pressing means can be boosted to exert a large force on the lower mold base, the locked portion on the other side of the lower mold base can be locked. It is extremely easy to maintain the engagement between the surface and the locking surface of the stopper more reliably.

According to a fifth aspect of the present invention, there is provided a mold fixing device for a tile forming machine according to the first, second, third or fourth aspect.
An air blowing mechanism is provided below the lower mold base.

Therefore, in addition to having the above-described functions and effects of the first, second, third, or fourth aspect, the lower mold base is provided.
When the base moves, the lower mold base is
The load of the lower mold base on the bed is reduced, albeit slightly, so that the lower mold base can be smoothly moved while the heavy mold is mounted.

[0028]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view in which a tile forming machine 10 provided with a mold fixing device 14 and a mold carrier trolley 12 are arranged beside it. FIG. 2 is a front view of a main part of the tile forming machine 10 provided with the mold fixing device 14. Fig. 3 is a plan view of a main part of the mold fixing device 14, Fig. 4 is a cross-sectional view taken along line BB of Fig. 3, and Fig. 5 is a partially enlarged perspective view of the mold fixing device 14 on which a lower mold is placed. FIG. 6 is a sectional view of a main part showing a fitting state of the lower mold base 16 and the stopper 18, and FIG. 7 is a lower mold base 16 according to the first embodiment.
FIG. 8 is a partially enlarged plan view of the lower mold base 16 and the stopper 18 according to the second embodiment.
FIG. 9 shows a lower mold base 16 and a stopper 18 according to the third embodiment.
FIG. 10 is a lower mold base according to a fourth embodiment.
FIG. 11 is a front view showing a use state of the pressing means 20 of the screw 16;
FIG. 12 is a front view showing a use state of the pressing means 20 of the lower mold base 16 according to the fifth embodiment, and FIG. 12 is a front view showing a conventional mold fixing device.

The tile forming machine 10 itself is not different from the conventional example and includes a ram 36 for supporting the upper mold and a bed 24 for supporting the lower mold. As is known, the ram 36 supports the upper die 26 below the fixing member 22, and is mounted on a guide member 34 erected on the bed 24 so as to be movable up and down.

The ram 36 is controlled by a toggle link mechanism 32 so that the ram 36 can be raised and lowered in the vertical direction. The toggle link mechanism 32 is controlled by a crank mechanism 28 that uses the motor 30 as a drive source. I have.

The crank mechanism 28 is configured so that the rotation of the drive motor 30 is transmitted to a toggle link mechanism 32, and the upper end of the toggle link mechanism 32 has a support member provided on a guide member 34. The lower end is fixed to the ram 36.

Thus, as is known, the driving of the motor 30 operates the crank mechanism 28 and the toggle link mechanism 32, and the ram 36 is guided by the guide member 34 to move up and down, so that the upper die 26 can move up and down. (See FIG. 1).

On the other hand, below the ram 36 and the upper die 26, a bed 24 for supporting a lower die base 16 and a lower die 38, which will be described later, is provided. A molding die 40 (the upper die 26) is provided beside the bed 24. And a lower die 38).

The embodiment of the mold fixing device 14 will now be described. This device 14 includes a lower mold base 16 movable horizontally on a bed 24 and a stopper 18 on the other side of the bed 24. It is composed of

As shown in FIG. 3, the lower mold base 16 is a plate-like member formed in a substantially C-shape whose both sides are symmetrical when viewed from a plane. It is a board. The lower mold base 16 is normally used while fixed on the bed 24, but is removed from the bed 24 when the lower mold 38 is replaced.

The lower mold base 16 is a bed 24 for positioning and fixing the lower mold 38 while the lower mold 38 is fixed.
Efforts have been made to control its movement and positioning under certain conditions so that it can move upward in the horizontal direction.

As means for controlling the movement and positioning of the lower mold base 16, a locked portion 42 is provided on the other side of the lower mold base 16 itself, and a stopper is provided on the other side of the bed 24. A second fixing means for controlling the fixing of the other side of the lower mold base 16 by the locked portion 42 and the stopper 18 is provided.

On the other hand, the first fixing means for fixing one side of the lower mold base 16 has a general structure, for example, a bolt insertion part on one side of the lower mold base 16. A hole 44 for the bolt 24 of the bed 24 common to the hole 44 and a bolt 48 common to both the holes 44, 46 are provided (see FIG. 4).

In this embodiment, the fixing means is a bolt 4
Although the holes 8 and the holes 44 and 46 are used, the present invention is not limited thereto, and any structure may be used as long as one side of the lower mold base 16 can be fixed on the bed 24.

Therefore, the second fixing means will be described in more detail. To be more specific, the lower base 16 is disposed on one side of the lower base 16 from the one side of the stopper 42 of the lower base 16. A locked surface 42a that is symmetrical with respect to the center line toward the other side and that is formed in a substantially C shape when viewed from above is provided (see FIGS. 3 and 5).

The locked surface 42a is tapered from the upper surface to the lower surface (FIGS. 5 and 6).
See).

On the other hand, the stopper 18 provided on the other side of the bed 24 is engaged with the lower mold base 16 by the locked portion 42 of the lower mold base 16. A locking surface 18a corresponding to the surface 42a is provided.
a is provided in a reverse taper shape from the lower surface to the upper surface (see FIG. 6).

The stopper 18 is fixed in a substantially C-shape on the other side of the bed 24 as shown in FIGS. 3 and 4, and the means for fixing the stopper 18 on the bed is shown in FIG. And a hole 49 provided in the stopper 18 and a bolt 52 inserted into both holes 50 and 49.

The specific configuration of the locked surface 42a of the locked portion 42 of the lower mold base 16 and the locking surface 18a of the stopper 18 is apparent from FIG. Base 16
And the locking surface 18a of the stopper 18
Are opposed to each other, and the locked surface 4 of the lower mold base 16 is
2a protrudes toward the locking surface 18a of the stopper 18, and the locking surface 18a of the stopper 18 corresponds to the locked surface 42a of the lower mold base 16.

In this embodiment, the stopper 18 is fixed to the other side when the lower mold base 16 is moved from one side on the bed 24 to the other side. In consideration of the space in the factory where it is installed, it is expected that the moving direction of the lower mold base 16 may have to be set from the other side on the bed 24 to one side. In order to fix the stopper 18 to one side of the bed 24, a bolt hole 50 is also provided on one side of the bed.

Next, after the lower mold base 16 is moved on the bed 24, the reliable fitting state between the locking portion 42 of the lower mold base 16 and the stopper 18 is continuously maintained. The pressing means 20 is provided for this purpose.

The pressing means 20 comprises an eccentric cam 20a and a lever-2.
0b, the eccentric cam 20a is rotatably provided on one side of the lower mold base 16.
Is freely inserted into a shaft hole 51 provided in the bed 24.

Therefore, by rotating the eccentric cam 20a of the pressing means 20, a force for moving the lower mold base 16 toward the other side is applied. As a result, the lower mold Part 42 of stopper base 16 and stopper 18
Can be reliably maintained.

When the lower mold 38 is fixed on the bed 24,
The lower mold 38 is introduced onto the bed 24 while being fixed on the lower mold base 16 in advance.

In this case, if the pressing means 20 is attached to one side of the bed 24 in advance, it becomes an obstacle when the lower mold base 16 is introduced onto the bed 24. The pressing means 20 is provided detachably with respect to the bed 24 so that the rotating shaft 20c can be removed from the inside of the shaft hole 51.

Also, it has been described above that the lower mold base 16 may be moved in one direction from the other side of the bed 24. In this case, the pressing means 20 is moved to the other side of the bed 24. Bed 2 so that it can be
A shaft hole 51 into which the turning shaft 20c of the pressing means 20 can be inserted is provided on the other side of the pressing member 20.

According to the embodiment of the present invention, when the lower mold base 16 is further moved from one side to the other side, the lower mold base 16 is reduced in order to reduce the load during the movement. An air blowing mechanism is provided to reduce the load on the bed 24.

As shown in FIGS. 3 and 4, an air chamber 70 is provided at the center of the lower mold base 16, and an air supply hole is provided on one side of the lower mold base 16. The air supply hole 68 is connected to an air pressure source (not shown).

The air from the air pressure source is introduced into the air chamber 70 through the air supply hole 68. By increasing the air pressure in the air chamber 70, the load of the lower mold base 16 on the bed 24 is reduced. The load at the time of moving the mold base 16 can be reduced.

When the locked surface 42a of the locked portion 42 of the lower mold base 16 and the locking surface 18a of the stopper 18 are fitted, the air in the air chamber 70 is sucked and the negative pressure is applied. When the pressure is applied, the engaged state between the locked surface 42a and the locking surface 18a can be maintained, and can function as an auxiliary means of the pressing means 20. Room 7
If 0 is set to a negative pressure, the fixing of the lower mold base 16 to the bed 24 becomes stronger, and the lower mold base 16 is operated during operation.
The position of the switch 16 does not shift.

Next, Embodiments 1 to 5 of the present invention will be described. In the first embodiment, the locked surface 4 of the locked portion 42 of the lower mold base 16 in the embodiment described above is used.
Although the configuration of the locking surface 18a of the stopper 18 differs from that of the stopper 2a, the other configurations are exactly the same, so that the description of the corresponding configuration uses the description of the above-described embodiment.

In the first embodiment, as shown in FIG. 7, the locked surface 42a and the locking surface 18a are provided symmetrically with the above-described embodiment. Base for lower mold 1
6, the locked surfaces 42a of the locked portions 42 are symmetrical with respect to a center line from one side to the other side, and are formed in a substantially inverted C shape when viewed from a plane. The locking surface 18a of the stopper 18 protrudes toward one side so as to correspond to the locked surface 42a of the locked portion 42 of the lower mold base 16.

Next, a second embodiment will be described. In the second embodiment, the locked portion 42 of the lower mold base 16 is the same as in the first embodiment.
The configuration of the locked surface 42a and the locking surface 18a of the stopper 18 is different from that of the embodiment. As shown in FIG.
The locked surfaces 42a of the locked portions 42 of the lower mold base 16 are arranged in two parallel positions, and the locking of the stopper 18 corresponding to the locked surfaces 42a of these two locked portions 42 is performed. Surface 18a is 2
In addition to the difference in these numbers, the specific configuration is the same as that of the previous embodiment.

Next, a third embodiment will be described. The third embodiment is different from the first embodiment in that the locked surface 42a of the locked portion 42 of the lower mold base 16 and the locking surface 18 of the stopper 18 are different.
The configuration of a is different. The locked surface 42a of the locked portion 42 of the lower mold base 16 and the locking surface 1 of the stopper 18
8a, the locked surface 42a and the locking surface 18a
Is formed between them.

More specifically, a vertical surface 42d is provided by cutting off the tip of the locked surface 42a on the stopper 18 side, and the shape of the locking surface 18a of the other stopper 18 is not limited to a taper shape. , A vertical surface 18b on a part of the bed 24 side
The gap 18c can be provided between the locked surface 42a and the locking surface 18a. By providing such a gap 18c, the locking surface 1 of the stopper 18
There is an advantage that dust and a formation layer that tend to be generated between the bed 8a and the bed 24 can be easily removed (see FIG. 9).

Next, a fourth embodiment will be described. Example 4 differs from Example 4 in the configuration of the pressing means 20 in the above-described embodiment. As shown in FIG.
4 is provided with a pressing rod 54 which can be raised and lowered via a shaft 53 provided in the front-rear direction of the bed 24, and by raising this pressing rod 54 in the direction of the arrow shown in FIG. This is a configuration in which one side of the mold base 16 is pressed. According to the pressing means 20 of this embodiment, it is not necessary to attach or remove the pressing means 20 to or from the bed 24 when moving the lower mold base 16.

Next, a fifth embodiment will be described. Example 5 also differs from Example 4 in the configuration of the pressing means 20 in the embodiment described above. As shown in FIG. 11, a screw 58 having a handle 56 is laid on one side of the bed 24, and a pressing piece 60 is in contact with one side of the lower mold base 16 on the other side of the screw 58. The pressing means 20 includes:

A screw rod having a shaft 64 that can be inserted into a shaft hole 62 provided in the bed 24 in order to make the pressing means 20 detachable and to maintain stability when the screw rod 58 rotates. A support member 66 is provided, and a shaft 64 of the screw support member 66 is inserted into the shaft hole 62.

Since the screw of the screw 58 is fitted to the screw inside the screw support member 66, the handle 5
6, the lower base 16 is pressed from one side to the other side, and the locked surface 4 of the lower base 16 is pressed.
Reliable fitting of the locking surface 18a of the stopper 18 with the 2a can be maintained.

[Brief description of the drawings]

FIG. 1 is a front view in which a tile forming machine provided with a forming die fixing device and a mold carrier cart are arranged beside the tile forming machine.

FIG. 2 is a front view of a main part of a tile forming machine provided with a mold fixing device.

FIG. 3 is a plan view of a main part of the mold fixing device.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a partially enlarged perspective view of a molding die fixing device on which a lower die is placed.

FIG. 6 is a cross-sectional view of a main part showing a fitting state of a lower mold base and a stopper.

FIG. 7 is a partially enlarged plan view of a lower mold base and a stopper according to the first embodiment.

FIG. 8 is a partially enlarged plan view of a lower mold base and a stopper according to a second embodiment.

FIG. 9 is a partially enlarged sectional view of a lower mold base and a stopper according to a third embodiment.

FIG. 10 is a front view showing a use state of a pressing means of a lower mold base according to a fourth embodiment.

FIG. 11 is a front view showing a use state of a pressing means of a lower mold base according to a fifth embodiment.

FIG. 12 is a front view showing a conventional mold fixing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Roof molding machine 14 Mold fixing device for roof molding machine 16 Base for lower mold 18 Stopper 18a Locking surface of stopper 20 Pressing means 20a Eccentric cam 20b Lever 24 Bed 38 Lower mold 42 Lower mold base Locked part 42a Locked surface of locked part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-249605 (JP, A) JP-A-54-163908 (JP, A) JP-A-63-56404 (JP, A) JP-A-61- 152408 (JP, A) JP 7-55487 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B28B 3/02 B28B 7/00

Claims (5)

(57) [Claims] 1. A lower mold base for supporting a lower mold is provided on a bed of a tile forming machine, and first fixing means for fixing the lower mold base to the bed is a lower mold base. A molding die fixing device for a roof tile forming machine provided with a second fixing means on one side and a second fixed means provided on the other side of the lower mold base. And a stopper provided on the other side of the bed. The lower mold base is symmetrical with respect to a center line from one side to the other side, and is formed in a substantially C-shape. A locked surface is provided on the stopper side of the locked portion, and a pair of locking surfaces corresponding to the locked surface of the lower mold base are provided on the locked portion side of the stopper. The locking surface of the mold base is tapered from the upper surface to the lower surface, and the locking surface of the stopper is tapered from the lower surface to the upper surface. Mold fixing device for tile forming machine, wherein the door. 2. A lower mold base for supporting a lower mold is provided on a bed of a tile forming machine, and a first fixing means for fixing the lower mold base to the bed is a lower mold base. A molding die fixing device for a roof tile forming machine provided with a second fixing means on one side and a second fixed means provided on the other side of the lower mold base. And a stopper provided on the other side of the bed, and are symmetrical with respect to a center line from one side of the lower mold base to the other side, and formed in a substantially inverted C shape. Is provided on the stopper side of the locked portion, and a pair of locking surfaces corresponding to the locked surface of the lower mold base are provided on the locked portion side of the stopper, The locked surface of the lower mold base is tapered from the upper surface to the lower surface, and the locking surface of the stopper is not tapered from the lower surface to the upper surface. Mold fixing device for tile forming machine, characterized in that. 3. A tile forming machine according to claim 1, wherein a pressing means for pressing the lower mold base from one side toward the other side is provided on one side of the bed. Mold fixing device. 4. A pressing means comprising an eccentric cam and a lever, wherein the eccentric cam is rotatably provided on one side of the lower mold base and the pressing means is detachable. The molding die fixing device for a roof tile molding machine according to claim 1, 2 or 3. 5. The molding die fixing device for a tile forming machine according to claim 1, wherein an air blowing mechanism is provided below the lower die base.