JPS6132123B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for pressure forming tiles such as straight tiles manufactured by paper making.

Conventionally, when cutting tile A' to the required dimensions and chamfering, the tile A', which has been paper-made and pressure-formed, is cut with a rotary blade 9 as shown in Fig. 1, and after curing and hardening, a second As shown in the figure, chamfering was performed using a grinder 10. Therefore, there are many burrs when cutting, and peeling between the layers of tile A' is likely to occur.If tile A' is wavy, finishing must be done along the waveform of the edge of tile A' when finishing with a grinder, which is extremely difficult. There was a problem that it was difficult.

The present invention has been made in view of the above points, and its purpose is to enable cutting and chamfering at the same time during pressure forming in the manufacturing process of roof tiles, thereby eliminating burrs and delamination of cut portions. To provide a pressure molding device for roof tiles, which prevents the occurrence of chamfering and enables chamfering before corrugation.

In the present invention, an upper mold 2 is disposed above a lower mold 1 so as to be movable up and down, a middle mold 4 whose lower surface serves as a pressure surface 3 is attached to the lower surface of the upper mold 2, and a chamfer blade 5 is attached to the side surface of the middle mold 4. is fixed, the lower surface of the chamfering blade 5 is formed into a chamfering surface 6 that protrudes downward from the pressure surface 3 of the medium die 4 and slopes downward as the distance from the side end surface of the medium die 4 increases, and a cutting blade 7 is provided on the outer surface of the chamfering blade 5. This relates to a pressure forming apparatus for tiles, which is characterized in that the cutting edge 8 of the cutting blade 7 is continuous with the chamfering surface 6 and protrudes downward from the chamfering surface 6. Hereinafter, the present invention will be explained in detail based on illustrated embodiments. A is a tile made of slate or the like, and the manufacturing process is to press and form it after papermaking, and finally to corrugate it. Pressure molding apparatus B consists of a lower mold 1 and an upper mold 2 that is vertically movable, and the lower mold 1 also serves as a carrier plate.

A middle mold 4 is attached to the lower surface of the upper mold 2. A chamfering blade 5 is fixed to the side end surface of the medium die 4 by fixing means 11 or the like, and a chamfering surface 6, which is the lower surface of the chamfering blade 5, is inclined. The material for the chamfering blade 5 may be tool steel, high-speed steel, cemented carbide, etc. in consideration of wear resistance, and in order to prevent the sheet-like tiles A from adhering after papermaking, hard chrome plating or the like may be used. It is preferable to apply Teflon coating to the chamfering surface 6.
A cutting blade 7 such as a Tomlin blade is attached to the side surface of the chamfering blade 5, and a cutting edge 8 of the cutting blade 7 is continuous with the chamfering surface 6 and protrudes downward. 12 is a blade holder. The paper-made green sheet 13 and felt 14 are then made into two layers and placed on the lower mold 1.
Next, when the upper die 2 is moved down, pressure is applied by the pressurizing surface 3 of the middle die 4 to form a spread sheet-shaped tile A. At the same time, the tile A is cut by the cutting blade 7 and the cut end is chamfered. Chamfered end surface 15 pressed by blade 5
is formed. The expanded sheet-like roof tile A formed in this manner is corrugated as shown in FIG. Figure 7 shows the roofing condition of the tiles.
By increasing the weight and adding shading, you can bring out a sense of luxury.

FIG. 4 shows a pressure forming apparatus B for producing a plurality of roof tiles A (four tiles are shown). This figure is a bottom view of the upper die 2. As shown in Fig. 5, a chamfering blade 5 and a cutting blade 7 are arranged between the adjacent medium dies 4, and the chamfering blades 5 are closely fixed to both sides of the cutting blade 7, and each of these chamfering blades 5 are attached to opposite side end surfaces of the medium 4. Further, a chamfering blade 5 and a cutting blade 7 are attached to the outer end surface of the middle die 4 located on the outside as shown in FIG. In addition, in such a pressure molding apparatus B that can take a plurality of tiles, chamfered end surfaces 15 are formed at both ends of the tile A, making the roofing work easier.

As described above, the present invention fixes a chamfering blade to the side end surface of the medium sized mold, and makes the lower surface of the chamfering blade a chamfering surface that protrudes downward from the pressurizing surface of the medium sized mold and slopes downward as it moves away from the side end surface of the medium sized mold. In addition to attaching the cutting blade to the outer surface of the blade, the cutting edge of the chamfering blade is continuous with the chamfering surface and protrudes downward from the chamfering surface, so that while applying pressure with the medium-sized pressure surface, the cutting edge of the chamfering blade It has the advantage of being able to cut tiles in the form of a spread sheet, eliminating the possibility of burrs or delamination, and improving the frost damage resistance of the tiles.Also, at the same time as cutting, the cut edges can be chamfered using the chamfering surface of the chamfering blade. Therefore, there is an advantage that the chamfered portion of the tile before corrugation processing can be formed in advance, so that the chamfered portion of the tile can be beautifully finished, and furthermore, manufacturing efficiency is improved.

[Brief explanation of the drawing]

1 and 2 are diagrams showing the manufacturing process of a conventional roof tile, FIG. 3 is a sectional view of the pressure forming apparatus of the present invention, and FIG. 4 is an upper mold of the same multi-sheet pressure forming apparatus. 5 is a sectional view of the same as above, FIG. 6 is a perspective view of the corrugated tile, and FIG. A mold, 3 is a pressure surface, 4 is a medium mold, 5 is a chamfering blade, 6 is a chamfering surface, 7 is a cutting blade, and 8 is a cutting edge.

Claims (1)

[Claims] 1. An upper mold is arranged above the lower mold so that it can move up and down, a middle mold whose lower surface is a pressure surface is attached to the lower surface of the upper mold, a chamfering blade is fixed to the side end surface of the middle mold, and the lower surface of the chamfering blade is A chamfering surface that protrudes downward from the pressure surface of the medium size and slopes downward as it moves away from the side end surface of the medium size, a cutting blade is attached to the outer surface of the chamfering blade, and the cutting edge of the cutting blade is continuous with the chamfering surface. A pressure forming device for tiles, characterized in that the device protrudes downward from the chamfering surface.